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Męcik M, Stefaniak K, Harnisz M, Korzeniewska E. Hospital and municipal wastewater as a source of carbapenem-resistant Acinetobacter baumannii and Pseudomonas aeruginosa in the environment: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:48813-48838. [PMID: 39052110 PMCID: PMC11310256 DOI: 10.1007/s11356-024-34436-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 07/16/2024] [Indexed: 07/27/2024]
Abstract
The increase in the prevalence of carbapenem-resistant Gram-negative bacteria, in particular Acinetobacter baumannii (CRAB) and Pseudomonas aeruginosa (CRPA), poses a serious threat for public health worldwide. This article reviews the alarming data on the prevalence of infections caused by CRAB and CRPA pathogens and their presence in hospital and municipal wastewater, and it highlights the environmental impact of antibiotic resistance. The article describes the key role of antibiotic resistance genes (ARGs) in the acquisition of carbapenem resistance and sheds light on bacterial resistance mechanisms. The main emphasis was placed on the transfer of ARGs not only in the clinical setting, but also in the environment, including water, soil, and food. The aim of this review was to expand our understanding of the global health risks associated with CRAB and CRPA in hospital and municipal wastewater and to analyze the spread of these micropollutants in the environment. A review of the literature published in the last decade will direct research on carbapenem-resistant pathogens, support the implementation of effective preventive measures and interventions, and contribute to the development of improved strategies for managing this problem.
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Affiliation(s)
- Magdalena Męcik
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720, Olsztyn, Poland
| | - Kornelia Stefaniak
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720, Olsztyn, Poland
| | - Monika Harnisz
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720, Olsztyn, Poland
| | - Ewa Korzeniewska
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720, Olsztyn, Poland.
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Kulecka M, Czarnowski P, Bałabas A, Turkot M, Kruczkowska-Tarantowicz K, Żeber-Lubecka N, Dąbrowska M, Paszkiewicz-Kozik E, Walewski J, Ługowska I, Koseła-Paterczyk H, Rutkowski P, Kluska A, Piątkowska M, Jagiełło-Gruszfeld A, Tenderenda M, Gawiński C, Wyrwicz L, Borucka M, Krzakowski M, Zając L, Kamiński M, Mikula M, Ostrowski J. Microbial and Metabolic Gut Profiling across Seven Malignancies Identifies Fecal Faecalibacillus intestinalis and Formic Acid as Commonly Altered in Cancer Patients. Int J Mol Sci 2024; 25:8026. [PMID: 39125593 PMCID: PMC11311272 DOI: 10.3390/ijms25158026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 07/18/2024] [Accepted: 07/19/2024] [Indexed: 08/12/2024] Open
Abstract
The key association between gut dysbiosis and cancer is already known. Here, we used whole-genome shotgun sequencing (WGS) and gas chromatography/mass spectrometry (GC/MS) to conduct metagenomic and metabolomic analyses to identify common and distinct taxonomic configurations among 40, 45, 71, 34, 50, 60, and 40 patients with colorectal cancer, stomach cancer, breast cancer, lung cancer, melanoma, lymphoid neoplasms and acute myeloid leukemia (AML), respectively, and compared the data with those from sex- and age-matched healthy controls (HC). α-diversity differed only between the lymphoid neoplasm and AML groups and their respective HC, while β-diversity differed between all groups and their HC. Of 203 unique species, 179 and 24 were under- and over-represented, respectively, in the case groups compared with HC. Of these, Faecalibacillus intestinalis was under-represented in each of the seven groups studied, Anaerostipes hadrus was under-represented in all but the stomach cancer group, and 22 species were under-represented in the remaining five case groups. There was a marked reduction in the gut microbiome cancer index in all case groups except the AML group. Of the short-chain fatty acids and amino acids tested, the relative concentration of formic acid was significantly higher in each of the case groups than in HC, and the abundance of seven species of Faecalibacterium correlated negatively with most amino acids and formic acid, and positively with the levels of acetic, propanoic, and butanoic acid. We found more differences than similarities between the studied malignancy groups, with large variations in diversity, taxonomic/metabolomic profiles, and functional assignments. While the results obtained may demonstrate trends rather than objective differences that correlate with different types of malignancy, the newly developed gut microbiota cancer index did distinguish most of the cancer cases from HC. We believe that these data are a promising step forward in the search for new diagnostic and predictive tests to assess intestinal dysbiosis among cancer patients.
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Affiliation(s)
- Maria Kulecka
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, 02-781 Warsaw, Poland
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Paweł Czarnowski
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Aneta Bałabas
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Maryla Turkot
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, 02-781 Warsaw, Poland
- Department of Cancer Prevention, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Kamila Kruczkowska-Tarantowicz
- Department of Internal Medicine and Hematology, Military Institute of Medicine—National Research Institute, 04-141 Warsaw, Poland
| | - Natalia Żeber-Lubecka
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, 02-781 Warsaw, Poland
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Michalina Dąbrowska
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Ewa Paszkiewicz-Kozik
- Department of Lymphoid Malignancies, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Jan Walewski
- Department of Lymphoid Malignancies, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Iwona Ługowska
- Early Phase Clinical Trials Unit, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Hanna Koseła-Paterczyk
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Piotr Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Anna Kluska
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Magdalena Piątkowska
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Agnieszka Jagiełło-Gruszfeld
- Department of Breast Cancer & Reconstructive Surgery, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Michał Tenderenda
- Department of Oncological Surgery and Neuroendocrine Tumors, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Cieszymierz Gawiński
- Department of Oncology and Radiotherapy, Maria Sklodowska-Curie National Cancer Research Institute, 02-781 Warsaw, Poland
| | - Lucjan Wyrwicz
- Department of Oncology and Radiotherapy, Maria Sklodowska-Curie National Cancer Research Institute, 02-781 Warsaw, Poland
| | - Magdalena Borucka
- Department of Lung and Chest Cancer, Maria Skłodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Maciej Krzakowski
- Department of Lung and Chest Cancer, Maria Skłodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Leszek Zając
- Department of Gastrointestinal Surgical Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Michał Kamiński
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, 02-781 Warsaw, Poland
- Department of Cancer Prevention, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Michał Mikula
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Jerzy Ostrowski
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, 02-781 Warsaw, Poland
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
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Zhao X, Qin J, Chen G, Yang C, Wei J, Li W, Jia W. Whole-genome sequencing, multilocus sequence typing, and resistance mechanism of the carbapenem-resistant Pseudomonas aeruginosa in China. Microb Pathog 2024; 192:106720. [PMID: 38815778 DOI: 10.1016/j.micpath.2024.106720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/14/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
Pseudomonas aeruginosa is a significant pathogen responsible for severe multisite infections with high morbidity and mortality rates. This study analyzed carbapenem-resistant Pseudomonas aeruginosa (CRPA) at a tertiary hospital in Shandong, China, using whole-genome sequencing (WGS). The objective was to explore the mechanisms and molecular characteristics of carbapenem resistance. A retrospective analysis of 91 isolates from January 2022 to March 2023 was performed, which included strain identification and antimicrobial susceptibility testing. WGS was utilized to determine the genome sequences of these CRPA strains, and the species were precisely identified using average nucleotide identification (ANI), with further analysis on multilocus sequence typing and strain relatedness. Some strains were found to carry the ampD and oprD genes, while only a few harbored carbapenemase genes or related genes. Notably, all strains possessed the mexA, mexE, and mexX genes. The major lineage identified was ST244, followed by ST235. The study revealed a diverse array of carbapenem resistance mechanisms among hospital isolates, differing from previous studies in mainland China. It highlighted that carbapenem resistance is not due to a single mechanism but rather a combination of enzyme-mediated resistance, AmpC overexpression, OprD dysfunction, and efflux pump overexpression. This research provides valuable insights into the evolutionary mechanisms and molecular features of CRPA resistance in this region, aiding in the national prevention and control of CRPA, and offering references for targeting and developing new drugs.
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Affiliation(s)
- Xue Zhao
- Department of Clinical Laboratory, Weifang People's Hospital, Weifang, Shandong Province, China
| | - Jiangnan Qin
- Department of Clinical Laboratory, Weifang People's Hospital, Weifang, Shandong Province, China
| | - Guang Chen
- Department of Clinical Laboratory, Weifang People's Hospital, Weifang, Shandong Province, China
| | - Chao Yang
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology and Immunology, Shanghai Institute of Immunity and Infection, Chinese Academy of Sciences, Shanghai, China
| | - Jie Wei
- Department of Clinical Laboratory, Weifang People's Hospital, Weifang, Shandong Province, China
| | - Wanxiang Li
- Department of Clinical Laboratory, Weifang People's Hospital, Weifang, Shandong Province, China
| | - Wei Jia
- Department of Clinical Laboratory, Weifang People's Hospital, Weifang, Shandong Province, China.
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Ba A, Roumy V, Al Ibrahim M, Raczkiewicz I, Samaillie J, Hakem A, Sahpaz S, Belouzard S, Diatta W, Sidybé M, Neut C, Séron K, Seck M, Rivière C. Antibacterial and anti-coronavirus investigation of selected Senegalese plant species according to an ethnobotanical survey. JOURNAL OF ETHNOPHARMACOLOGY 2024; 328:118070. [PMID: 38521430 DOI: 10.1016/j.jep.2024.118070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 02/28/2024] [Accepted: 03/17/2024] [Indexed: 03/25/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In Senegal, upper and lower respiratory tract infections constitute a real health problem. To manage these disorders, most people rely on the use of local medicinal plants. This is particularly the case for species belonging to the botanical families, Combretaceae, Fabaceae, Myrtaceae and Rubiaceae, which are widely used to treat various respiratory problems such as colds, flu, rhinitis, sinusitis, otitis, angina, bronchitis, bronchiolitis and also pneumonia. AIM OF THE STUDY The aim of this study was to identify medicinal plants traditionally used for the management of infectious diseases, in particular those of the respiratory tract. On the basis of these ethnopharmacological uses, this study made it possible to highlight the antibacterial, antiviral and cytotoxic activities of selected plant species. MATERIALS AND METHODS An ethnobotanical survey was conducted in Senegal among informants, including herbalists, traditional healers, and households, using medicinal plants in the management of infectious diseases, with a focus on respiratory tract infections. The most cited plant species were evaluated in vitro on a panel of 18 human pathogenic bacteria may be involved in respiratory infections and against the human coronavirus HCoV-229E in Huh-7 cells. The antiviral activity of the most active extracts against HCoV-229E was also evaluated on COVID-19 causing agent, SARS-CoV-2 in Vero-81 cells. In parallel, cytotoxic activities were evaluated on Huh-7 cells. RESULTS A total of 127 informants, including 100 men (78.74%) and 27 women (21.26%) participated in this study. The ethnobotanical survey led to the inventory of 41 plant species belonging to 19 botanical families used by herbalists and/or traditional healers and some households to treat infectious diseases, with a specific focus on upper respiratory tract disorders. Among the 41 plant species, the most frequently mentioned in the survey were Guiera senegalensis J.F. Gmel. (95.2%), Combretum glutinosum Perr. Ex DC. (93.9%) and Eucalyptus spp. (82.8%). Combretaceae (30.2%) represented the most cited botanical family with six species, followed by Fabaceae (29.3%, 12 species). A total of 33 crude methanolic extracts of the 24 plant species selected for their number of citations were evaluated in vitro for their antimicrobial and cytotoxic activities. Guiera senegalensis, Combretum glutinosum, Vachellia nilotica subsp. tomentosa (Benth.) Kyal. & Boatwr, Eucalyptus camaldulensis Dehnh., and Terminalia avicennioides Guill. & Perr., showed antibacterial activities. The most active plants against HCoV-229E were: Ficus sycomorus L., Mitragyna inermis (Willd.) Kuntze, Pterocarpus erinaceus Poir., and Spermacoce verticillata L. One of these plants, Mitragyna inermis, was also active against SARS-CoV-2. CONCLUSION This work confirmed the anti-infective properties of plant species traditionally used in Senegal. Overall, the most frequently cited plant species showed the best antibacterial activities. Moreover, some of the selected plant species could be considered as a potential source for the management of coronavirus infections. This new scientific data justified the use of these plants in the management of some infectious pathologies, especially those of the respiratory tract.
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Affiliation(s)
- Abda Ba
- Joint Research Unit 1158 BioEcoAgro, Univ. Lille, Junia, INRAE, Univ. Liège, UPJV, Univ. Artois, ULCO, F-59650, Villeneuve d'Ascq, France; Laboratoire de Chimie Organique et Thérapeutique, Faculté de Médecine, de Pharmacie et D'Odontologie de l'Université Cheikh Anta Diop de Dakar, BP 5005, Dakar-Fann, Senegal
| | - Vincent Roumy
- Joint Research Unit 1158 BioEcoAgro, Univ. Lille, Junia, INRAE, Univ. Liège, UPJV, Univ. Artois, ULCO, F-59650, Villeneuve d'Ascq, France
| | - Malak Al Ibrahim
- Joint Research Unit 1158 BioEcoAgro, Univ. Lille, Junia, INRAE, Univ. Liège, UPJV, Univ. Artois, ULCO, F-59650, Villeneuve d'Ascq, France; Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR9017 - Center for Infection and Immunity of Lille (CIIL), F-59000, Lille, France
| | - Imelda Raczkiewicz
- Joint Research Unit 1158 BioEcoAgro, Univ. Lille, Junia, INRAE, Univ. Liège, UPJV, Univ. Artois, ULCO, F-59650, Villeneuve d'Ascq, France; Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR9017 - Center for Infection and Immunity of Lille (CIIL), F-59000, Lille, France
| | - Jennifer Samaillie
- Joint Research Unit 1158 BioEcoAgro, Univ. Lille, Junia, INRAE, Univ. Liège, UPJV, Univ. Artois, ULCO, F-59650, Villeneuve d'Ascq, France
| | - Asma Hakem
- Joint Research Unit 1158 BioEcoAgro, Univ. Lille, Junia, INRAE, Univ. Liège, UPJV, Univ. Artois, ULCO, F-59650, Villeneuve d'Ascq, France
| | - Sevser Sahpaz
- Joint Research Unit 1158 BioEcoAgro, Univ. Lille, Junia, INRAE, Univ. Liège, UPJV, Univ. Artois, ULCO, F-59650, Villeneuve d'Ascq, France
| | - Sandrine Belouzard
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR9017 - Center for Infection and Immunity of Lille (CIIL), F-59000, Lille, France
| | - William Diatta
- Laboratoire de Pharmacognosie et Botanique, Faculté de Médecine, de Pharmacie et D'Odontologie de l'Université Cheikh Anta Diop de Dakar, BP 5005, Dakar-Fann, Senegal
| | - Mamadou Sidybé
- Laboratoire de botanique et biodiversité (LBB), Département Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, BP 5005, Dakar-Fann, Senegal
| | - Christel Neut
- Univ. Lille, INSERM, CHU Lille, U1286 INFINITE, F-59000, Lille, France
| | - Karin Séron
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR9017 - Center for Infection and Immunity of Lille (CIIL), F-59000, Lille, France
| | - Matar Seck
- Laboratoire de Chimie Organique et Thérapeutique, Faculté de Médecine, de Pharmacie et D'Odontologie de l'Université Cheikh Anta Diop de Dakar, BP 5005, Dakar-Fann, Senegal
| | - Céline Rivière
- Joint Research Unit 1158 BioEcoAgro, Univ. Lille, Junia, INRAE, Univ. Liège, UPJV, Univ. Artois, ULCO, F-59650, Villeneuve d'Ascq, France.
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Simão FA, Almeida MM, Rosa HS, Marques EA, Leão RS. Genetic determinants of antimicrobial resistance in polymyxin B resistant Pseudomonas aeruginosa isolated from airways of patients with cystic fibrosis. Braz J Microbiol 2024; 55:1415-1425. [PMID: 38619733 PMCID: PMC11153443 DOI: 10.1007/s42770-024-01311-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 03/21/2024] [Indexed: 04/16/2024] Open
Abstract
Pseudomonas aeruginosa is the main pathogen associated with pulmonary exacerbation in patients with cystic fibrosis (CF). CF is a multisystemic genetic disease caused by mutations in the cystic fibrosis transmembrane conductance regulator gene, which mainly affects pulmonary function. P. aeruginosa isolated from individuals with CF in Brazil is not commonly associated with multidrug resistance (MDR), especially when compared to global occurrence, where the presence of epidemic clones, capable of expressing resistance to several drugs, is often reported. Due to the recent observations of MDR isolates of P. aeruginosa in our centers, combined with these characteristics, whole-genome sequencing was employed for analyses related to antimicrobial resistance, plasmid identification, search for phages, and characterization of CF clones. All isolates in this study were polymyxin B resistant, exhibiting diverse mutations and reduced susceptibility to carbapenems. Alterations in mexZ can result in the overexpression of the MexXY efflux pump. Mutations in oprD, pmrB, parS, gyrA and parC may confer reduced susceptibility to antimicrobials by affecting permeability, as observed in phenotypic tests. The phage findings led to the assumption of horizontal genetic transfer, implicating dissemination between P. aeruginosa isolates. New sequence types were described, and none of the isolates showed an association with epidemic CF clones. Analysis of the genetic context of P. aeruginosa resistance to polymyxin B allowed us to understand the different mechanisms of resistance to antimicrobials, in addition to subsidizing the understanding of possible relationships with epidemic strains that circulate among individuals with CF observed in other countries.
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Affiliation(s)
- Felipe A Simão
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mila M Almeida
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Heloísa S Rosa
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Elizabeth A Marques
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Robson S Leão
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
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Chen L, Liu S, Zhang Y, Tang Q, Quan C, Wang J, Peng X, Zhong X. Palmitic acid-capped MIL-101-Al as a nano-adjuvant to amplify immune responses against Pseudomonas aeruginosa. NANOSCALE 2024; 16:10306-10317. [PMID: 38727538 DOI: 10.1039/d4nr01180e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
As a highly contagious opportunistic pathogen, Pseudomonas aeruginosa (P. aeruginosa) is one of the main causes of healthcare-associated infections. The drug-resistant nature of P. aeruginosa can render antibiotic treatments ineffective, leading to a high morbidity and mortality. Higher specificity and reduced toxicity are features of immunotherapy, which can generate robust immune responses and preserve long-term immunological memory to completely eradicate infections. In this study, we developed a type of P. aeruginosa vaccine based on a metal-organic framework. Specifically, MIL-101-Al nanoparticles were synthesized to encapsulate antigens derived from the bacterial lysate (BL) of PAO1, a drug-resistant P. aeruginosa, and the adjuvant unmethylated cytosine-phosphate-guanine oligonucleotide (CpG), which were then modified with palmitic acid (PAA) to obtain MIL-BC@PAA. The stability and biocompatibility were significantly increased by capping with PAA. Moreover, MIL-BC@PAA showed significantly enhanced uptake by antigen presenting cells (APCs), and promoted their maturation. Importantly, immunity studies revealed the greatly elicited antigen-specific humoral and cellular responses, and a protection rate of about 70% was observed in P. aeruginosa-challenged mice. Overall, these results demonstrate the promising potential of MIL-BC@PAA as an ideal nanovaccine for P. aeruginosa vaccination.
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Affiliation(s)
- Lingming Chen
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, The First Dongguan Affiliated Hospital, Guangdong Medical University, 523808 Dongguan, Guangdong, China
- Institute of Laboratory Medicine, School of Medical Technology, Guangdong Medical University, 523808 Dongguan, Guangdong, China
| | - Shuai Liu
- Otolaryngology Department, Huangjiang Hospital, Dongguan 523750, China
| | - Yunting Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Qiling Tang
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Chunyu Quan
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Jundan Wang
- Jiangxi College of Traditional Chinese Medicine, Nanchang 330004, China
| | - Xinsheng Peng
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Xiaofang Zhong
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
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Contreras-Martínez OI, Sierra-Quiroz D, Angulo-Ortíz A. Antibacterial and Antibiofilm Potential of Ethanolic Extracts of Duguetia vallicola (Annonaceae) against in-Hospital Isolates of Pseudomonas aeruginosa. PLANTS (BASEL, SWITZERLAND) 2024; 13:1412. [PMID: 38794482 PMCID: PMC11126144 DOI: 10.3390/plants13101412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/08/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024]
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen that is especially dominant in people with cystic fibrosis; the drug resistance expressed by this pathogen and its capacity for adaptation poses a significant challenge to its treatment and control, thereby increasing morbidity and mortality rates globally. In this sense, the search for new treatment alternatives is imminent today, with products of plant origin being an excellent alternative for use. The objective of this research was to evaluate the antibacterial and antibiofilm potential and to explore the possible effect of ethanolic extracts from the wood and bark of Duguetia vallicola on the cell membrane. Microdilution assays showed the inhibition of bacterial growth by more than 50%, with the lowest concentration (62.5 μg/mL) of both extracts evaluated. Furthermore, we report the ability of both extracts to inhibit mature biofilms, with inhibition percentages between 48.4% and 93.7%. Intracellular material leakage experiments (260/280 nm), extracellular pH measurements, and fluorescence microscopy with acridine orange (AO) and ethidium bromide (EB) showed cell membrane damage. This indicates that the antibacterial action of ethanolic extracts of D. vallicola is associated with damage to the integrity of the cell membrane and consequent death of these pathogens. These results serve as a reference for future studies in establishing the mechanisms of action of these extracts.
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Affiliation(s)
- Orfa Inés Contreras-Martínez
- Biology Department, Faculty of Basic Sciences, University of Córdoba, Montería 230002, Colombia; (O.I.C.-M.); (D.S.-Q.)
| | - Daniela Sierra-Quiroz
- Biology Department, Faculty of Basic Sciences, University of Córdoba, Montería 230002, Colombia; (O.I.C.-M.); (D.S.-Q.)
| | - Alberto Angulo-Ortíz
- Chemistry Department, Faculty of Basic Sciences, University of Córdoba, Montería 230002, Colombia
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Cruickshank D, Hamilton DE, Iloba I, Jensen GS. Secreted Metabolites from Pseudomonas, Staphylococcus, and Borrelia Biofilm: Modulation of Immunogenicity by a Nutraceutical Enzyme and Botanical Blend. Microorganisms 2024; 12:991. [PMID: 38792820 PMCID: PMC11124038 DOI: 10.3390/microorganisms12050991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/09/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024] Open
Abstract
Bacterial biofilms are hardy, adaptable colonies, evading immune recognition while triggering and sustaining inflammation. The goals for this study were to present a method for testing the immunogenicity of secreted metabolites from pathogenic biofilm and to document whether biofilm treated with a nutraceutical enzyme and botanical blend (NEBB) showed evidence of reprogrammed bacterial metabolism, potentially becoming more recognizable to the immune system. We screened immune-modulating properties of metabolites from established biofilm from Pseudomonas aeruginosa (Pa), Stapholycoccus simulans (Ss), and Borrelia burgdorferi (Bb). Secreted metabolites significantly increased the cytokine production by human peripheral blood mononuclear cells, including Interleukin-1-beta (IL-1β), Interleukin-6 (IL-6), macrophage inflammatory protein-1-alpha (MIP-1α), tumor necrosis factor-alpha (TNF-α), interleukin-1 receptor antagonist (IL-1ra), and interleukin-10 (IL-10). Pa metabolites triggered the most robust increase in IL-1β, whereas Bb metabolites triggered the most robust increase in IL-10. NEBB-disrupted biofilm produced metabolites triggering altered immune modulation compared to metabolites from untreated biofilm. Metabolites from NEBB-disrupted biofilm triggered increased MIP-1α levels and reduced IL-10 levels, suggesting a reduced ability to suppress the recruitment of phagocytes compared to untreated biofilm. The results suggest that nutraceutical biofilm disruption offers strategies for inflammation management in chronic infectious illnesses. Further clinical studies are warranted to evaluate clinical correlations in infected human hosts.
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Affiliation(s)
| | | | - Ifeanyi Iloba
- NIS Labs, 1437 Esplanade, Klamath Falls, OR 97601, USA;
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9
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Tait JR, Anderson D, Nation RL, Creek DJ, Landersdorfer CB. Identifying and mathematically modeling the time-course of extracellular metabolic markers associated with resistance to ceftolozane/tazobactam in Pseudomonas aeruginosa. Antimicrob Agents Chemother 2024; 68:e0108123. [PMID: 38376189 PMCID: PMC10989016 DOI: 10.1128/aac.01081-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 01/11/2024] [Indexed: 02/21/2024] Open
Abstract
Extracellular bacterial metabolites have potential as markers of bacterial growth and resistance emergence but have not been evaluated in dynamic in vitro studies. We investigated the dynamic metabolomic footprint of a multidrug-resistant hypermutable Pseudomonas aeruginosa isolate exposed to ceftolozane/tazobactam as continuous infusion (4.5 g/day, 9 g/day) in a hollow-fiber infection model over 7-9 days in biological replicates (n = 5). Bacterial samples were collected at 0, 7, 23, 47, 71, 95, 143, 167, 191, and 215 h, the supernatant quenched, and extracellular metabolites extracted. Metabolites were analyzed via untargeted metabolomics, including hierarchical clustering and correlation with quantified total and resistant bacterial populations. The time-courses of five (of 1,921 detected) metabolites from enriched pathways were mathematically modeled. Absorbed L-arginine and secreted L-ornithine were highly correlated with the total bacterial population (r -0.79 and 0.82, respectively, P<0.0001). Ribose-5-phosphate, sedoheptulose-7-phosphate, and trehalose-6-phosphate correlated with the resistant subpopulation (0.64, 0.64, and 0.67, respectively, P<0.0001) and were likely secreted due to resistant growth overcoming oxidative and osmotic stress induced by ceftolozane/tazobactam. Using pharmacokinetic/pharmacodynamic-based transduction models, these metabolites were successfully modeled based on the total or resistant bacterial populations. The models well described the abundance of each metabolite across the differing time-course profiles of biological replicates, based on bacterial killing and, importantly, resistant regrowth. These proof-of-concept studies suggest that further exploration is warranted to determine the generalizability of these findings. The metabolites modeled here are not exclusive to bacteria. Future studies may use this approach to identify bacteria-specific metabolites correlating with resistance, which would ultimately be extremely useful for clinical translation.
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Affiliation(s)
- Jessica R. Tait
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Dovile Anderson
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Roger L. Nation
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Darren J. Creek
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Cornelia B. Landersdorfer
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
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10
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Cerqueira Dos Santos S, Araújo Torquato C, de Alexandria Santos D, Orsato A, Leite K, Serpeloni JM, Losi-Guembarovski R, Romão Pereira E, Dyna AL, Lopes Barboza MG, Fernandes Arakawa MH, Pires Bitencourt JA, da Cruz Silva S, da Silva Sá GC, Dias Rodrigues P, Quintella CM, Faccin-Galhardi LC. Production and characterization of rhamnolipids by Pseudomonas aeruginosa isolated in the Amazon region, and potential antiviral, antitumor, and antimicrobial activity. Sci Rep 2024; 14:4629. [PMID: 38472312 DOI: 10.1038/s41598-024-54828-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
Biosurfactants encompass structurally and chemically diverse molecules with surface active properties, and a broad industrial deployment, including pharmaceuticals. The interest is growing mainly for the low toxicity, biodegradability, and production from renewable sources. In this work, the optimized biosurfactant production by Pseudomonas aeruginosa BM02, isolated from the soil of a mining area in the Brazilian Amazon region was assessed, in addition to its antiviral, antitumor, and antimicrobial activities. The optimal conditions for biosurfactant production were determined using a factorial design, which showed the best yield (2.28 mg/mL) at 25 °C, pH 5, and 1% glycerol. The biosurfactant obtained was characterized as a mixture of rhamnolipids with virucidal properties against Herpes Simplex Virus, Coronavirus, and Respiratory Syncytial Virus, in addition to antimicrobial properties against Gram-positive bacteria (Staphylococcus aureus and Enterococcus faecium), at 50 µg/mL. The antitumor activity of BS (12.5 µg/mL) was also demonstrated, with potential selectivity in reducing the proliferation of breast tumor cells, after 1 min of exposure. These results demonstrate the importance of studying the interconnection between cultivation conditions and properties of industrially important compounds, such as rhamnolipid-type biosurfactant from P. aeruginosa BM02, a promising and sustainable alternative in the development of new antiviral, antitumor, and antimicrobial prototypes.
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Affiliation(s)
- Sidnei Cerqueira Dos Santos
- Biology College, Federal University of Southern and Southeast Pará (Unifesspa), Marabá, PA, 68500-000, Brazil.
| | - Chayenna Araújo Torquato
- Biology College, Federal University of Southern and Southeast Pará (Unifesspa), Marabá, PA, 68500-000, Brazil
| | | | - Alexandre Orsato
- Department of Chemistry, State University of Londrina (UEL), Londrina, PR, 86057-970, Brazil
| | - Karoline Leite
- Department of Chemistry, State University of Londrina (UEL), Londrina, PR, 86057-970, Brazil
| | - Juliana Mara Serpeloni
- Department of General Biology, State University of Londrina (UEL), Londrina, PR, 86057-970, Brazil
| | | | - Erica Romão Pereira
- Department of General Biology, State University of Londrina (UEL), Londrina, PR, 86057-970, Brazil
| | - André Luiz Dyna
- Department of Microbiology, State University of Londrina (UEL), Londrina, PR, 86057-970, Brazil
| | | | | | | | - Sebastião da Cruz Silva
- Chemistry College, Federal University of Southern and Southeast Pará (Unifesspa), Marabá, PA, 68500-000, Brazil
| | - Giulian César da Silva Sá
- Biology College, Federal University of Southern and Southeast Pará (Unifesspa), Marabá, PA, 68500-000, Brazil
| | - Pamela Dias Rodrigues
- Department of General and Inorganic Chemistry, Federal University of Bahia (UFBA), Salvador, BA, 40170-115, Brazil
| | - Cristina Maria Quintella
- Department of General and Inorganic Chemistry, Federal University of Bahia (UFBA), Salvador, BA, 40170-115, Brazil
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11
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Song Y, Wu X, Li Z, Ma QQ, Bao R. Molecular mechanism of siderophore regulation by the Pseudomonas aeruginosa BfmRS two-component system in response to osmotic stress. Commun Biol 2024; 7:295. [PMID: 38461208 PMCID: PMC10924945 DOI: 10.1038/s42003-024-05995-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 02/29/2024] [Indexed: 03/11/2024] Open
Abstract
Pseudomonas aeruginosa, a common nosocomial pathogen, relies on siderophores to acquire iron, crucial for its survival in various environments and during host infections. However, understanding the molecular mechanisms of siderophore regulation remains incomplete. In this study, we found that the BfmRS two-component system, previously associated with biofilm formation and quorum sensing, is essential for siderophore regulation under high osmolality stress. Activated BfmR directly bound to the promoter regions of pvd, fpv, and femARI gene clusters, thereby activating their transcription and promoting siderophore production. Subsequent proteomic and phenotypic analyses confirmed that deletion of BfmRS reduces siderophore-related proteins and impairs bacterial survival in iron-deficient conditions. Furthermore, phylogenetic analysis demonstrated the high conservation of the BfmRS system across Pseudomonas species, functional evidences also indicated that BfmR homologues from Pseudomonas putida KT2440 and Pseudomonas sp. MRSN12121 could bind to the promoter regions of key siderophore genes and osmolality-mediated increases in siderophore production were observed. This work illuminates a novel signaling pathway for siderophore regulation and enhances our understanding of siderophore-mediated bacterial interactions and community establishment.
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Affiliation(s)
- Yingjie Song
- College of Life Science, Sichuan Normal University, Chengdu, 610101, China
| | - Xiyu Wu
- Advanced Mass Spectrometry Center, Research Core Facility, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610213, China
| | - Ze Li
- Center of Infectious Diseases, Division of Infectious Diseases in State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qin Qin Ma
- College of Life Science, Sichuan Normal University, Chengdu, 610101, China
| | - Rui Bao
- Center of Infectious Diseases, Division of Infectious Diseases in State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.
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12
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Zhang Y, Tian L, Zhao X, Jiang X, Qin J, Wang Y, Yu X. Enhanced protective efficacy of an OprF/PcrV bivalent DNA vaccine against Pseudomonas aeruginosa using a hydrogel delivery system. Biomed Pharmacother 2024; 172:116264. [PMID: 38359491 DOI: 10.1016/j.biopha.2024.116264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/19/2024] [Accepted: 02/06/2024] [Indexed: 02/17/2024] Open
Abstract
Pseudomonas aeruginosa (PA) is one of the leading pathogens responsible for hospital-acquired infections. With the increasing antibiotic resistance of PA, clinical treatment has become increasingly challenging. DNA vaccines represent a promising approach for combating PA infection. However, the immune response induced by a single antigen is limited, and combination vaccines hold greater therapeutic potential. The highly conserved OprF and PcrV genes are attractive candidate antigens for vaccine development, but the poor delivery of such vaccines has limited their clinical application. In this study, we constructed an OprF/PcrV bivalent DNA vaccine, and a polyaspartamide/polyethylene glycol di-aldehyde (PSIH/PEG DA) hydrogel was formulated to improve DNA delivery. The OprF/PcrV DNA vaccine formulated with the PSIH/PEG DA hydrogel was carefully characterized in vitro and in vivo and showed suitable compatibility. The PSIH/PEG DA hydrogel formulation induced a mixed Th1/Th2/Th17 immune response in mice, leading to a significant increase in antibody titers, lymphocyte proliferation rates, and cytokine levels compared to those in mice treated with single or combined vaccines. The PSIH/PEG DA hydrogel delivery system significantly enhanced the immune protection of the DNA vaccine in a murine pneumonia model, as revealed by the reduced bacterial burden and inflammation in the mouse lungs and increased survival rate. In conclusion, the PSIH/PEG DA hydrogel delivery system can further enhance the immune efficacy of the combination OprF/PcrV DNA vaccine. This research provides a novel optimized strategy for the prevention and treatment of PA infection using DNA vaccines.
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Affiliation(s)
- Yating Zhang
- Phase I Clinical Trial Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Linxia Tian
- Phase I Clinical Trial Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Xuan Zhao
- Phase I Clinical Trial Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - XiaoFeng Jiang
- Phase I Clinical Trial Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Jianglei Qin
- Key Laboratory of Pathogenesis Mechanism and Control of Inflammatory-Autoimmune Diseases in Hebei Province, Baoding 071002, China
| | - Yong Wang
- Key Laboratory of Pathogenesis Mechanism and Control of Inflammatory-Autoimmune Diseases in Hebei Province, Baoding 071002, China
| | - Xian Yu
- Phase I Clinical Trial Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China.
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13
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Qiao L, Zhang Y, Chen Y, Chi X, Ding J, Zhang H, Han Y, Zhang B, Jiang J, Lin Y. Synergistic Activity and Mechanism of Sanguinarine with Polymyxin B against Gram-Negative Bacterial Infections. Pharmaceutics 2024; 16:70. [PMID: 38258081 PMCID: PMC10820148 DOI: 10.3390/pharmaceutics16010070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/18/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024] Open
Abstract
Compounds that potentiate the activity of clinically available antibiotics provide a complementary solution, except for developing novel antibiotics for the rapid emergence of multidrug-resistant Gram-negative bacteria (GNB). We sought to identify compounds potentiating polymyxin B (PMB), a traditional drug that has been revived as the last line for treating life-threatening GNB infections, thus reducing its nephrotoxicity and heterogeneous resistance in clinical use. In this study, we found a natural product, sanguinarine (SA), which potentiated the efficacy of PMB against GNB infections. The synergistic effect of SA with PMB was evaluated using a checkerboard assay and time-kill curves in vivo and the murine peritonitis model induced by Escherichia coli in female CD-1 mice in vivo. SA assisted PMB in accelerating the reduction in bacterial loads both in vitro and in vivo, improving the inflammatory responses and survival rate of infected animals. The subsequent detection of the intracellular ATP levels, membrane potential, and membrane integrity indicated that SA enhanced the bacterial-membrane-breaking capacity of PMB. A metabolomic analysis showed that the inhibition of energy metabolism, interference with nucleic acid biosynthesis, and the blocking of L-Ara4N-related PMB resistance may also contribute to the synergistic effect. This study is the first to reveal the synergistic activity and mechanism of SA with PMB, which highlights further insights into anti-GNB drug development.
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Affiliation(s)
- Luyao Qiao
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
- Department of Pharmacy & State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China;
| | - Yu Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
| | - Ying Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
| | - Xiangyin Chi
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
| | - Jinwen Ding
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
| | - Hongjuan Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
| | - Yanxing Han
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
| | - Bo Zhang
- Department of Pharmacy & State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China;
| | - Jiandong Jiang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
| | - Yuan Lin
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; (L.Q.); (Y.Z.); (Y.C.); (X.C.); (J.D.); (H.Z.); (Y.H.)
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14
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Eshawu AB, Ghalsasi VV. Metabolomics of natural samples: A tutorial review on the latest technologies. J Sep Sci 2024; 47:e2300588. [PMID: 37942863 DOI: 10.1002/jssc.202300588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 10/29/2023] [Accepted: 11/06/2023] [Indexed: 11/10/2023]
Abstract
Metabolomics is the study of metabolites present in a living system. It is a rapidly growing field aimed at discovering novel compounds, studying biological processes, diagnosing diseases, and ensuring the quality of food products. Recently, the analysis of natural samples has become important to explore novel bioactive compounds and to study how environment and genetics affect living systems. Various metabolomics techniques, databases, and data analysis tools are available for natural sample metabolomics. However, choosing the right method can be a daunting exercise because natural samples are heterogeneous and require untargeted approaches. This tutorial review aims to compile the latest technologies to guide an early-career scientist on natural sample metabolomics. First, different extraction methods and their pros and cons are reviewed. Second, currently available metabolomics databases and data analysis tools are summarized. Next, recent research on metabolomics of milk, honey, and microbial samples is reviewed. Finally, after reviewing the latest trends in technologies, a checklist is presented to guide an early-career researcher on how to design a metabolomics project. In conclusion, this review is a comprehensive resource for a researcher planning to conduct their first metabolomics analysis. It is also useful for experienced researchers to update themselves on the latest trends in metabolomics.
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Affiliation(s)
- Ali Baba Eshawu
- School of Biotechnology, Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, India
| | - Vihang Vivek Ghalsasi
- School of Biotechnology, Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, India
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15
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Vanderpool EJ, Rumbaugh KP. Host-microbe interactions in chronic rhinosinusitis biofilms and models for investigation. Biofilm 2023; 6:100160. [PMID: 37928619 PMCID: PMC10622848 DOI: 10.1016/j.bioflm.2023.100160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/28/2023] [Accepted: 09/28/2023] [Indexed: 11/07/2023] Open
Abstract
Chronic rhinosinusitis (CRS) is a debilitating condition characterized by long-lasting inflammation of the paranasal sinuses. It affects a significant portion of the population, causing a considerable burden on individuals and healthcare systems. The pathogenesis of CRS is multifactorial, with bacterial infections playing a crucial role in CRS development and persistence. In recent years, the presence of biofilms has emerged as a key contributor to the chronicity of sinusitis, further complicating treatment and exacerbating symptoms. This review aims to explore the role of biofilms in CRS, focusing on the involvement of the bacterial species Staphylococcus aureus and Pseudomonas aeruginosa, their interactions in chronic infections, and model systems for studying biofilms in CRS. These species serve as an example of how microbial interplay can influence disease progression and exemplify the need for continued investigation and innovation in CRS research.
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Affiliation(s)
- Emily J. Vanderpool
- Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
- Burn Center of Research Excellence, Texas Tech University Health Sciences Center, Lubbock, TX, USA
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Kendra P. Rumbaugh
- Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
- Burn Center of Research Excellence, Texas Tech University Health Sciences Center, Lubbock, TX, USA
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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16
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Genito CJ, Darwitz BP, Greenwald MA, Wolfgang MC, Thurlow LR. Hyperglycemia potentiates increased Staphylococcus aureus virulence and resistance to growth inhibition by Pseudomonas aeruginosa. Microbiol Spectr 2023; 11:e0229923. [PMID: 37933971 PMCID: PMC10715105 DOI: 10.1128/spectrum.02299-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 09/29/2023] [Indexed: 11/08/2023] Open
Abstract
IMPORTANCE Individuals with diabetes are prone to more frequent and severe infections, with many of these infections being polymicrobial. Polymicrobial infections are frequently observed in skin infections and in individuals with cystic fibrosis, as well as in indwelling device infections. Two bacteria frequently co-isolated from infections are Staphylococcus aureus and Pseudomonas aeruginosa. Several studies have examined the interactions between these microorganisms. The majority of these studies use in vitro model systems that cannot accurately replicate the microenvironment of diabetic infections. We employed a novel murine indwelling device model to examine interactions between S. aureus and P. aeruginosa. Our data show that competition between these bacteria results in reduced growth in a normal infection. In a diabetic infection, we observe increased growth of both microbes and more severe infection as both bacteria invade surrounding tissues. Our results demonstrate that diabetes changes the interaction between bacteria resulting in poor infection outcomes.
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Affiliation(s)
- Christopher J. Genito
- Division of Oral and Craniofacial Health Sciences, University of North Carolina at Chapel Hill Adams School of Dentistry, Chapel Hill, North Carolina, USA
| | - Benjamin P. Darwitz
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina, USA
| | - Matthew A. Greenwald
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina, USA
- Marsico Lung Institute, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina, USA
| | - Matthew C. Wolfgang
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina, USA
- Marsico Lung Institute, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina, USA
| | - Lance R. Thurlow
- Division of Oral and Craniofacial Health Sciences, University of North Carolina at Chapel Hill Adams School of Dentistry, Chapel Hill, North Carolina, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina, USA
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17
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Ali MG, Almoneim ZA, Kareem SM. Evaluated gene expressions of Metallo beta lactamase genes GIM and , VIM, SPM in Pseudomonas aeruginosa clinical isolates. Mol Biol Rep 2023; 50:10111-10120. [PMID: 37917414 DOI: 10.1007/s11033-023-08883-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 10/03/2023] [Indexed: 11/04/2023]
Abstract
Pseudomonas aeruginosa is considered as one of the human health care problems, P. aeruginosa's carbapenem resistance emerges by several different mechanisms, some of which include carbapenems genes. P. aeruginosa's carbapenem resistance is a significant health concern, So this study aims to evaluate MBL gene expressions. The study was conducted at the Department of Microbiology, AL-Mahmoodia Hospital, over one year from January to December 2022. The samples were collected from patients with different clinical sources (Burn, Urine, Wound, Sputum, Ear, and Blood), from different ages while. Samples were collected from three hospitals in Baghdad including Al-Yarmouk Teaching Hospital, AL-Mahmmodiya Hospital, and Child's Central Teaching Hospital. A study analyzed 55 P. aeruginosa strains from various clinical sources, the study utilizes the chemical characterization, VITEK 2 system, 16s rRNA, antibiogram sensitivity tests, antibiotic susceptibility using eight antibiotics, including Amikacin, Ciprofloxacin, Levofloxacin, Imipenem Meropenem, Piperacillin, Cefepim and Aztreonam. The test of bacterial susceptibility revealed that each isolate was highly resistant to piperacillin, which are 96.36%, and lower resistance to Ciprofloxacin, which are 32%. Phenotypic screening carbapenem resistance methods combined the disk synergy test and conventional PCR that were used to detect isolates by using 16 S rRNA. This proves that the bacteria is P. aeruginosa and computed by measuring gene expression of the target genes (GIM, VIM, SPM) by using the real-time PCR, which is employed for twenty-five isolates. The result indicates that the expression level of the VIM gene is highly regulated in carbapenem-resistance isolates compared to control isolates that is 1.00. While the expression level of gene GIM and SPM is downregulated in carbapenem-resistance isolates compared to control isolates that is 6. The carbapenem VIM and GIM, SPM (class B) genes are essential for resistance in P. aeruginosa induced by chromosomal changes that modify membrane permeability efflux pump overexpression for genes. As a result, many studies require for discovering new strategies to reduce the threat to public health through preventing the spread of these isolates via tight infections, control measures, and the reduction of the danger to public health.
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Affiliation(s)
- Marwa Ghalib Ali
- Department of Medical Laboratory, AL-Mahmmodiya Hospital, Ministry of Health, Baghdad, Iraq
| | | | - Sawsan M Kareem
- Branch of Biotechnology, Department of Biology, College of Science, Mustansiriyah University, POX 10244, Baghdad, Iraq.
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18
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Liu J, Lu D, Wang J. A simple, sensitive and colorimetric assay for Pseudomonas aeruginosa infection analysis. Biotechniques 2023; 75:210-217. [PMID: 37881830 DOI: 10.2144/btn-2023-0030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023] Open
Abstract
Skin and soft tissue infections caused by Pseudomonas aeruginosa are common acquired diseases in postpartum care. Many methods have been developed in recent years for detecting P. aeruginosa, but they are criticized for the drawbacks of labor-intensiveness, complicated operation and high cost. Here, a simple, sensitive and colorimetric assay for P. aeruginosa detection is described. The approach displays a green color for positive samples and colorless for target-free samples. The approach exhibits a wide detection range and a low limit of detection of 45 CFU/ml. Thus, the developed ligation-initiated multiple-signal amplification method may be used for on-site testing of pathogenic bacteria and assist in the early diagnosis of postpartum care skin infections.
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Affiliation(s)
- Jie Liu
- Obstetric Clinic, Chatu Hospital, the Fourth Hospital of Shijiazhuang City, Shijiazhuang City, Hebei Province, 050000, China
| | - Dan Lu
- Department of Gynecology, Chatu Hospital, the Fourth Hospital of Shijiazhuang City, Shijiazhuang City, Hebei Province, 050000, China
| | - Junyuan Wang
- Department of Gynecology, Chatu Hospital, the Fourth Hospital of Shijiazhuang City, Shijiazhuang City, Hebei Province, 050000, China
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19
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García-Márquez J, Álvarez-Torres D, Cerezo IM, Domínguez-Maqueda M, Figueroa FL, Alarcón FJ, Acién G, Martínez-Manzanares E, Abdala-Díaz RT, Béjar J, Arijo S. Combined Dietary Administration of Chlorella fusca and Ethanol-Inactivated Vibrio proteolyticus Modulates Intestinal Microbiota and Gene Expression in Chelon labrosus. Animals (Basel) 2023; 13:3325. [PMID: 37958080 PMCID: PMC10648860 DOI: 10.3390/ani13213325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
The use of functional feeds in aquaculture is currently increasing. This study aimed to assess the combined impact of dietary green microalgae Chlorella fusca and ethanol-inactivated Vibrio proteolyticus DCF12.2 (CVP diet) on thick-lipped grey mullet (Chelon labrosus) juvenile fish. The effects on intestinal microbiota and the transcription of genes related to metabolism, stress, and the immune system were investigated after 90 days of feeding. Additionally, the fish were challenged with Aeromonas hydrophila and polyinosinic-polycytidylic acid (poly I:C) to evaluate the immune response. Microbiota analysis revealed no significant differences in alpha and beta diversity between the anterior and posterior intestinal sections of fish fed the control (CT) and CVP diets. The dominant genera varied between the groups; Pseudomonas and Brevinema were most abundant in the CVP group, whereas Brevinema, Cetobacterium, and Pseudomonas were predominant in the CT group. However, microbial functionality remained unaltered. Gene expression analysis indicated notable changes in hif3α, mhcII, abcb1, mx, and tnfα genes in different fish organs on the CVP diet. In the head kidney, gene expression variations were observed following challenges with A. hydrophila or poly I:C, with higher peak values seen in fish injected with poly I:C. Moreover, c3 mRNA levels were significantly up-regulated in the CVP group 72 h post-A. hydrophila challenge. To conclude, incorporating C. fusca with V. proteolyticus in C. labrosus diet affected the microbial species composition in the intestine while preserving its functionality. In terms of gene expression, the combined diet effectively regulated the transcription of stress and immune-related genes, suggesting potential enhancement of fish resistance against stress and infections.
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Affiliation(s)
- Jorge García-Márquez
- Departamento de Microbiología, Facultad de Ciencias, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
| | - Daniel Álvarez-Torres
- Centro Experimental Grice Hutchinson, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
| | - Isabel M. Cerezo
- Departamento de Microbiología, Facultad de Ciencias, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
- Unidad de Bioinformática–SCBI, Parque Tecnológico, Universidad de Málaga, 29590 Málaga, Spain
| | - Marta Domínguez-Maqueda
- Departamento de Microbiología, Facultad de Ciencias, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
| | - Félix L. Figueroa
- Centro Experimental Grice Hutchinson, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
| | - Francisco Javier Alarcón
- Departamento de Biología y Geología, Universidad de Almería, Ceimar-Universidad de Almería, 04120 Almería, Spain
| | - Gabriel Acién
- Departamento de Ingeniería Química, Universidad de Almería, Ceimar-Universidad de Almería, 04120 Almería, Spain
| | - Eduardo Martínez-Manzanares
- Departamento de Microbiología, Facultad de Ciencias, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
| | - Roberto T. Abdala-Díaz
- Departamento de Ecología y Geología, Facultad de Ciencias, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
| | - Julia Béjar
- Departamento de Biología Celular, Genética y Fisiología, Facultad de Ciencias, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
| | - Salvador Arijo
- Departamento de Microbiología, Facultad de Ciencias, Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, Ceimar-Universidad de Málaga, 29071 Málaga, Spain
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20
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Hu J, Liang L, He M, Lu Y. Sensitive and Direct Analysis of Pseudomonas aeruginosa through Self-Primer-Assisted Chain Extension and CRISPR-Cas12a-Based Color Reaction. ACS OMEGA 2023; 8:34852-34858. [PMID: 37779973 PMCID: PMC10536833 DOI: 10.1021/acsomega.3c04180] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023]
Abstract
Pseudomonas aeruginosa (P. aeruginosa) is a common opportunistic Gram-negative pathogen that may cause infections to immunocompromised patients. However, sensitive and reliable analysis of P. aeruginosa remains a huge challenge. In this method, target recognition assists the formation of a self-primer and initiates single-stranded chain production. The produced single-stranded DNA chain is identified by CRISPR-Cas12a, and consequently, the trans-cleavage activity of the Cas12a enzyme is activated to parallelly digest Ag+ aptamer sequences that are chelated with silver ions (Ag+). The released Ag+ reacted with 3,3',5,5'-tetramethylbenzidine (TMB) for coloring. Compared with the traditional color developing strategies, which mainly rely on the DNA hybridization, the color developing strategy in this approach exhibits a higher efficiency due to the robust trans-cleavage activity of the Cas12a enzyme. Consequently, the method shows a low limit of detection of a wide detection of 5 orders of magnitudes and a low limit of detection of 21 cfu/mL, holding a promising prospect in early diagnosis of infections. Herein, we develop a sensitive and reliable method for direct and colorimetric detection of P. aeruginosa by integrating self-primer-assisted chain production and CRISPR-Cas12a-based color reaction and believe that the established approach will facilitate the development of bacteria-analyzing sensors.
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Affiliation(s)
- Jiangchun Hu
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Ling Liang
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Mingfang He
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Yongping Lu
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
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21
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Huang YY, Li JH, Liang TT, Zhao ZA, Xu J, Chen WY. Virtual Screening of Potential RoxS Inhibitors and Evaluation of Their Antimicrobial Activity in Combination with Antibiotics against Clinically Resistant Bacteria. Antibiotics (Basel) 2023; 12:1422. [PMID: 37760718 PMCID: PMC10525716 DOI: 10.3390/antibiotics12091422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/03/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Pseudomonas aeruginosa with difficult-to-treat resistance has been designated as an urgent or serious threat by the CDC in the United States; therefore, novel antibacterial drugs and combination strategies are urgently needed. The sensor kinase RoxS is necessary for the aerobic growth of Pseudomonas aeruginosa. This study aimed to screen candidate RoxS inhibitors and evaluate their efficacy in treating multi-drug-resistant and extensively drug-resistant Pseudomonas aeruginosa in combination with meropenem and amikacin to identify promising combination strategies. RoxS protein structures were constructed using homology modeling and potential RoxS inhibitors, including Ezetimibe, Deferasirox, and Posaconazole, were screened from the FDA-approved ZINC drug database using molecular docking and molecular dynamics simulations. MIC and checkerboard assays were used to determine the in vitro antimicrobial efficacy of the three drugs in combination with antibiotics. The results of in vitro experiments showed an additive effect of 100 μg/mL Deferasirox or 16 μg/mL Posaconazole in combination with meropenem and a synergistic effect of 1.5 μg/mL Deferasirox and amikacin. In summary, these three drugs are potential inhibitors of RoxS, and their combination with meropenem or amikacin is expected to reverse the resistance of P. aeruginosa, providing new combination strategies for the treatment of clinically difficult-to-treat Pseudomonas aeruginosa.
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Affiliation(s)
- Ya-Yan Huang
- Department of Pharmacy, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China
| | - Jia-Hao Li
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Ting-Ting Liang
- Department of Pharmacy, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China
| | - Ze-An Zhao
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jun Xu
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Wen-Ying Chen
- Department of Pharmacy, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China
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22
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She Y, Liu J, Su M, Li Y, Guo Y, Liu G, Deng M, Qin H, Sun B, Guo J, Liu D. A Study on Differential Biomarkers in the Milk of Holstein Cows with Different Somatic Cells Count Levels. Animals (Basel) 2023; 13:2446. [PMID: 37570255 PMCID: PMC10417570 DOI: 10.3390/ani13152446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Dairy cow mastitis is one of the common diseases of dairy cows, which will not only endanger the health of dairy cows but also affect the quality of milk. Dairy cow mastitis is an inflammatory reaction caused by pathogenic microorganisms and physical and chemical factors in dairy cow mammary glands. The number of SCC in the milk of dairy cows with different degrees of mastitis will increase in varying degrees. The rapid diagnosis of dairy cow mastitis is of great significance for dairy cow health and farm economy. Based on the results of many studies on the relationship between mastitis and somatic cell count in dairy cows, microflora, and metabolites in the milk of Holstein cows with low somatic cell level (SCC less than 200,000), medium somatic cell level (SCC up to 200,000 but less than 500,000) and high somatic cell level (SCC up to 5000,00) were analyzed by microbiome and metabolic group techniques. The results showed that there were significant differences in milk microbiota and metabolites among the three groups (p < 0.05), and there was a significant correlation between microbiota and metabolites. Meanwhile, in this experiment, 75 differential metabolites were identified in the H group and L group, 40 differential metabolites were identified in the M group and L group, and six differential microorganisms with LDA scores more than four were found in the H group and L group. These differential metabolites and differential microorganisms may become new biomarkers for the diagnosis, prevention, and treatment of cow mastitis in the future.
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Affiliation(s)
- Yuanhang She
- College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China; (Y.S.); (M.S.)
| | - Jianying Liu
- Agro-Tech Extension Center of Guangdong Province, Guangzhou 510500, China; (J.L.)
- Guangdong Provincial Animal Husbandry Technology Promotion Station, Guangzhou 510500, China
| | - Minqiang Su
- College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China; (Y.S.); (M.S.)
| | - Yaokun Li
- College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China; (Y.S.); (M.S.)
| | - Yongqing Guo
- College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China; (Y.S.); (M.S.)
| | - Guangbin Liu
- College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China; (Y.S.); (M.S.)
| | - Ming Deng
- College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China; (Y.S.); (M.S.)
| | - Hongxian Qin
- Agro-Tech Extension Center of Guangdong Province, Guangzhou 510500, China; (J.L.)
- Guangdong Provincial Animal Husbandry Technology Promotion Station, Guangzhou 510500, China
| | - Baoli Sun
- College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China; (Y.S.); (M.S.)
| | - Jianchao Guo
- Agro-Tech Extension Center of Guangdong Province, Guangzhou 510500, China; (J.L.)
- Guangdong Provincial Animal Husbandry Technology Promotion Station, Guangzhou 510500, China
| | - Dewu Liu
- College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China; (Y.S.); (M.S.)
- Collaborative Innovation Center for Healthy Sheep Breeding and Zoonoses Prevention and Control, Shihezi University, Shihezi 832000, China
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23
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Wang F, Wang Z, Tang J. The interactions of Candida albicans with gut bacteria: a new strategy to prevent and treat invasive intestinal candidiasis. Gut Pathog 2023; 15:30. [PMID: 37370138 DOI: 10.1186/s13099-023-00559-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND The gut microbiota plays an important role in human health, as it can affect host immunity and susceptibility to infectious diseases. Invasive intestinal candidiasis is strongly associated with gut microbiota homeostasis. However, the nature of the interaction between Candida albicans and gut bacteria remains unclear. OBJECTIVE This review aimed to determine the nature of interaction and the effects of gut bacteria on C. albicans so as to comprehend an approach to reducing intestinal invasive infection by C. albicans. METHODS This review examined 11 common gut bacteria's interactions with C. albicans, including Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, Enterococcus faecalis, Staphylococcus aureus, Salmonella spp., Helicobacter pylori, Lactobacillus spp., Bacteroides spp., Clostridium difficile, and Streptococcus spp. RESULTS Most of the studied bacteria demonstrated both synergistic and antagonistic effects with C. albicans, and just a few bacteria such as P. aeruginosa, Salmonella spp., and Lactobacillus spp. demonstrated only antagonism against C. albicans. CONCLUSIONS Based on the nature of interactions reported so far by the literature between gut bacteria and C. albicans, it is expected to provide new ideas for the prevention and treatment of invasive intestinal candidiasis.
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Affiliation(s)
- Fei Wang
- Department of Trauma-Emergency & Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, 128 Ruili Road, Shanghai, 200240, China
| | - Zetian Wang
- Department of Trauma-Emergency & Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, 128 Ruili Road, Shanghai, 200240, China.
| | - Jianguo Tang
- Department of Trauma-Emergency & Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, 128 Ruili Road, Shanghai, 200240, China.
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24
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Ramos MS, Furlan JPR, Dos Santos LDR, Rosa RDS, Savazzi EA, Stehling EG. Patterns of antimicrobial resistance and metal tolerance in environmental Pseudomonas aeruginosa isolates and the genomic characterization of the rare O6/ST900 clone. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:713. [PMID: 37221353 DOI: 10.1007/s10661-023-11344-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 05/03/2023] [Indexed: 05/25/2023]
Abstract
Pseudomonas aeruginosa can harbor several virulence and antimicrobial resistance genes (ARGs). In this regard, virulent and multidrug-resistant (MDR) P. aeruginosa strains are closely related to severe infections. In addition, this species can also carry metal tolerance genes, selecting mainly antimicrobial-resistant strains. The action of several pollutants on the environment may favor the occurrence of antimicrobial-resistant and metal-tolerant strains. Therefore, the aim of this study was to characterize potentially pathogenic, antimicrobial-resistant, and/or metal-tolerant P. aeruginosa isolates from different environmental samples (waters, soils, sediments, or sands) and to perform a whole-genome sequence-based analysis of a rare clone from residual water. Environmental isolates carried virulence genes related to adherence, invasion, and toxin production, and 79% of the isolates harbored at least five virulence genes. In addition, the isolates were resistant to different antimicrobials, including important antipseudomonal agents, and 51% of them were classified as MDR, but only ARGs associated with aminoglycoside resistance were found. Furthermore, some isolates were tolerant mainly to copper, cadmium, and zinc, and presented metal tolerance genes related to these compounds. Whole-genome characterization of an isolate with unique phenotype with simultaneous resistance to antimicrobials and metals showed nonsynonymous mutations in different antimicrobial resistance determinants and revealed a classification of O6/ST900 clone as rare, potentially pathogenic, and predisposed to acquire multidrug resistance genes. Therefore, these results draw attention to the dissemination of potentially pathogenic, antimicrobial-resistant, and metal-tolerant P. aeruginosa isolates in environmental niches, alerting to a potential risk mainly to human health.
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Affiliation(s)
- Micaela Santana Ramos
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil
| | - João Pedro Rueda Furlan
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil
| | - Lucas David Rodrigues Dos Santos
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil
| | - Rafael da Silva Rosa
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil
| | | | - Eliana Guedes Stehling
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. Do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil.
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25
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Gao J, Su Y, Wang Z. Remote Co-loading of amphipathic acid drugs in neutrophil nanovesicles infilled with cholesterol mitigates lung bacterial infection and inflammation. Biomaterials 2023; 296:122071. [PMID: 36878092 PMCID: PMC9973434 DOI: 10.1016/j.biomaterials.2023.122071] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/07/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
Lung bacterial infections could result in acute lung inflammation/injury (ALI) that propagates to its severe form, acute respiratory distress syndrome (ADRS) leading to the death. The molecular mechanism of ALI is associated with bacterial invasion and the host inflammation response. Here, we proposed a novel strategy to specifically target both bacteria and inflammatory pathways by co-loading of antibiotics (azlocillin, AZ) and anti-inflammatory agents (methylprednisolone sodium, MPS) in neutrophil nanovesicles. We found that cholesterol infilling in the membrane of nanovesicles can maintain a pH gradient between intra-vesicles and outer-vesicles, so we remotely loaded both AZ and MPS in single nanovesicles. The results showed that loading efficiency of both drugs can achieve more than 30% (w/w), and delivery of both drugs using nanovesicles accelerated bacterial clearance and resolved inflammation responses, thus preventing the potential lung damage due to infections. Our studies show that remote loading of multiple drugs in neutrophil nanovesicles which specifically target the infectious lung could be translational to treat ARDS.
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Affiliation(s)
- Jin Gao
- Department of Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA, 99202, USA
| | - Yujie Su
- Department of Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA, 99202, USA
| | - Zhenjia Wang
- Department of Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA, 99202, USA.
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26
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Zlatić G, Martinović I, Pilić Z, Kodranov I, Ciganović J, Sokol V. The effect of Artemisia annua L. extract on microbiologically influenced corrosion of A36 steel caused by Pseudomonas aeruginosa. Bioelectrochemistry 2023; 152:108447. [PMID: 37146346 DOI: 10.1016/j.bioelechem.2023.108447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/14/2023] [Accepted: 04/15/2023] [Indexed: 05/07/2023]
Abstract
The protective effect of A. annua against microbiologically influenced corrosion (MIC) of A36 steel caused by P. aeruginosa (PA) in a simulated marine environment was investigated using electrochemical, spectroscopic, and surface techniques. PA was found to accelerate the local dissolution of A36 which led to the formation of a porous α-FeOOH and γ-FeOOH surface layer. 2D and 3D profiles of treated coupons, obtained by optical profilometer, revealed the formation of crevices in the presence of PA. On the contrary, adding A. annua to the biotic medium led to the formation of a thinner, more uniform surface without significant damage. Electrochemical data showed that the addition of A. annua prevented the MIC of A36 steel with an inhibition efficiency of 60%. The protective effect was attributed to the formation of a more compact Fe3O4 surface layer, as well as the adsorption of phenolics, such as caffeic acid and its derivatives on the A36 steel surfaces, as detected by FTIR and SEM-EDS analysis. ICP-OES confirmed that Fe and Cr species more readily diffuse from A36 steel surfaces incubated in biotic media (Fe; 1516.35 ± 7.94 μg L-1 cm-2, Cr; 11.77 ± 0.40 μg L-1 cm-2) compared to the inhibited media (Fe; 35.01 ± 0.28 μg L-1 cm-2, Cr; 1.58 ± 0.01 μg L-1 cm-2).
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Affiliation(s)
- Gloria Zlatić
- Department of Chemistry, Faculty of Science and Education, University of Mostar, Matice hrvatske bb, Mostar, Bosnia and Herzegovina.
| | - Ivana Martinović
- Department of Chemistry, Faculty of Science and Education, University of Mostar, Matice hrvatske bb, Mostar, Bosnia and Herzegovina
| | - Zora Pilić
- Department of Chemistry, Faculty of Science and Education, University of Mostar, Matice hrvatske bb, Mostar, Bosnia and Herzegovina
| | - Igor Kodranov
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, Serbia
| | - Jovan Ciganović
- Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, P. O. Box 522, Belgrade, Serbia
| | - Vesna Sokol
- Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, Split, Croatia
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27
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Santos LS, Rossi DA, Braz RF, Fonseca BB, Guidotti–Takeuchi M, Alves RN, Beletti ME, Almeida-Souza HO, Maia LP, Santos PDS, de Souza JB, de Melo RT. Roles of viable but non-culturable state in the survival of Campylobacter jejuni. Front Cell Infect Microbiol 2023; 13:1122450. [PMID: 37056707 PMCID: PMC10086134 DOI: 10.3389/fcimb.2023.1122450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/09/2023] [Indexed: 03/30/2023] Open
Abstract
Despite being considered fragile and fastidious, Campylobacter jejuni is the most prevalent cause of foodborne bacterial gastroenteritis, and chicken meat is considered the main vehicle of transmission to humans. This agent can survive adverse conditions in the form of biofilms, but extreme stress (nutritional, oxidative and thermal) promotes the acquisition of a state called viable but not culturable (VBNC). The emergence of this pathogen worldwide and the recent international requirements in its control instigated us to qualitatively and quantitatively estimate the time required for the acquisition of the VBNC form in 27 strains of C. jejuni, characterize morphological aspects, determine its adaptive and invasive potential and perform comparative metabolomic evaluation. Extreme stress promoted the complete acquisition of the VBNC form in a mean time of 26 days. Starting from an average initial count of 7.8 log CFU/mL, the first four days determined the greatest average reduction of the culturable form of 3.2 log CFU/mL. The scanning and transmission image analyses showed a transition from the typical viable form (VT) to the VBNC form, with initial acquisition of the straight rod shape, followed by loss of the flagella and subdivision into two to 11 imperfect cocci arranged in a chain and rich in cellular content, until their individual release. RT-PCR identified the presence of ciaB and p19 transcripts in the 27 cultivable C. jejuni strains, a character maintained in the VBNC form only for p19 and in 59.3% (16/27) of the VBNC strains for the ciaB gene. The average inoculation of 1.8 log CFU/mL of C. jejuni VBNC into primary chicken embryo hepatocyte cells promoted the occurrence of apoptosis processes significantly after 24 hours of contact by one of the strains tested. In C. jejuni VBNC, we detected higher expression of metabolites linked to protective and adaptation mechanisms and of volatile organic precursor compounds indicative of metabolism interruption. The oscillations in the time of acquisition of the VBNC form together with the presence of transcripts for ciaB and p19, the identification of cell lysis and metabolites that ensure the maintenance of the pathogen alert to the fact that C. jejuni VBNC remains virulent and adapted to stress, which makes evident the potential danger of this latent form, which is not detectable by official methodologies.
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Affiliation(s)
- Leticia Silva Santos
- Laboratory of Molecular Epidemiology, Federal University of Uberlandia, Uberlandia, Brazil
| | - Daise Aparecida Rossi
- Laboratory of Molecular Epidemiology, Federal University of Uberlandia, Uberlandia, Brazil
| | | | | | | | | | | | | | - Larissa Prado Maia
- Biotechnology Institute, Federal University of Uberlandia, Uberlandia, Brazil
| | | | | | - Roberta Torres de Melo
- Laboratory of Molecular Epidemiology, Federal University of Uberlandia, Uberlandia, Brazil
- *Correspondence: Roberta Torres de Melo,
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Investigating the effect of the probiotic Lactobacillus plantarum and the prebiotic fructooligosaccharides on Pseudomonas aeruginosa metabolome, virulence factors and biofilm formation as potential quorum sensing inhibitors. Microb Pathog 2023; 177:106057. [PMID: 36878335 DOI: 10.1016/j.micpath.2023.106057] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 02/27/2023] [Accepted: 03/03/2023] [Indexed: 03/07/2023]
Abstract
Pseudomonas aeruginosa (P. aeruginosa) uses quorum sensing signaling (QS) molecules to control the expression of virulence factors and biofilm formation. In this study, the effects of the probiotic's (Lactobacillus plantarum (L. plantarum)) lysate and cell-free supernatant and the prebiotic (Fructooligosaccharides (FOS)) on the levels of P. aeruginosa QS molecules, virulence factors, biofilm density and metabolites were observed. These effects were investigated using exofactor assays, crystal violet and liquid chromatography-mass spectrometry (LC-MS)-based metabolomics approach. Results showed that in comparison to untreated P. aeruginosa, the L. plantarum cell-free supernatant (5%) and FOS (2%) significantly reduced the levels of the virulence factor pyoverdine (PVD) and several metabolites in the QS pathway including Pseudomonas autoinducer-2 (PAI-2). Metabolomics study revealed that the level of different secondary metabolites involved in the biosynthesis of vitamins, amino acids and the tricarboxylic acid (TCA) cycle were also affected. L. Plantarum was found to have a higher impact on the metabolomics profile of P. aeruginosa and its QS molecules compared to FOS. Lastly, a decrease in the formation of the P. aeruginosa biofilm was observed in a time-dependent pattern upon treatment with either cell-free supernatant of L. plantarum (5%), FOS (2%) or a combination of both treatments (5% + 2%). The latter showed the highest effect with 83% reduction in biofilm density at 72 h incubation. This work highlighted the important role probiotics and prebiotics play as potential QS inhibitors for P. aeruginosa. Moreover, it demonstrated the significant role of LC-MS metabolomics for investigating the altered biochemical and QS pathways in P. aeruginosa.
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Li H, Guan J, Chen J, Sun W, Chen H, Wen Y, Chen Q, Xie S, Zhang X, Tao A, Yan J. Necroptosis signaling and NLRP3 inflammasome cross-talking in epithelium facilitate Pseudomonas aeruginosa mediated lung injury. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166613. [PMID: 36470578 DOI: 10.1016/j.bbadis.2022.166613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/09/2022] [Accepted: 11/25/2022] [Indexed: 12/07/2022]
Abstract
Pseudomonas aeruginosa induced acute lung injury is such a serious risk to public health, but the pathological regulation remains unclear. Here, we reported that PA mediated epithelial necroptosis plays an important role in pathological process. Pharmacological and genomic ablation of necroptosis signaling ameliorate PA mediated ALI and pulmonary inflammation. Our results further proved NLRP3 inflammasome to involve in the process. Mechanism investigation revealed the cross-talking between inflammasome activation and necroptosis that MLKL-dependent necroptosis signaling promotes the change of mitochondrial membrane potential for the release of reactive oxygen species (ROS), which is the important trigger for functional inflammasome activation. Furthermore, antioxidants such as Mito-TEMPO was confirmed to significantly restrain inflammasome activation in epithelium, resulting in a reduction in PA induced pulmonary inflammation. Taken together, our findings revealed that necroptosis-triggered NLRP3 inflammasome in epithelium plays a crucial role in PA mediated injury, which could be a potential therapeutic target for pulmonary inflammation.
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Affiliation(s)
- Haoyang Li
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Jieying Guan
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Jiaqian Chen
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Weimin Sun
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Honglv Chen
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Yuhuan Wen
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Qile Chen
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Shiyun Xie
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Xueyan Zhang
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China; School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Ailin Tao
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China
| | - Jie Yan
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 510260, China.
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Tang Y, Shi Y, Jia B, Zhang Y, Wang Q. Evolution and function analysis of glycerol kinase GlpK in Pseudomonasaeruginosa. Biochem Biophys Res Commun 2023; 645:30-39. [PMID: 36680934 DOI: 10.1016/j.bbrc.2022.12.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 12/20/2022] [Indexed: 01/13/2023]
Abstract
Pseudomonas aeruginosa is a Gram-negative bacterium capable of widespread niches, which is also one of the main bacteria that cause patient infection. The metabolic diversity of Pseudomonas aeruginosa is an essential factor in adapting to a variety of environments. Based on the previous studies, adaptive genetic variation in the glycerol kinase GlpK, the glycerol 3-phosphotransferase, contributes to the fitness of bacteria in human bodies, such as Mycobacterium tuberculosis and Escherichia coli. Thus, this study aimed to explore the molecular evolution and function of glpK in P. aeruginosa. Using extensive population genomic data, we have identified the prevalence of two glpK copies in P. aeruginosa that clustered into distinct branches, which were later known as Clade 1 and 2. The evolution analysis revealed that glpK in Clade 1 derived from an ancestral P. aeruginosa species and the other from an ancient horizontal gene transfer event. In addition, we confirmed that the GlpK in Clade 2 still retained glycerol kinase activity but was much weaker than that of GlpK in Clade 1. We demonstrated the importance of the critical amino acid Q70 in GlpK glycerol kinase activity by point mutation. Furthermore, Co-expression network analysis implied that the two glpK copies of P. aeruginosa regulate separate networks and may be a strategy to improve fitness in P. aeruginosa.
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Affiliation(s)
- Yao Tang
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Yuqi Shi
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Boshuang Jia
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Yunhua Zhang
- School of Resources and Environment, Anhui Agricultural University, Hefei, Anhui, 230000, China.
| | - Qiang Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, 210023, China.
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trans-Cinnamaldehyde as a Novel Candidate to Overcome Bacterial Resistance: An Overview of In Vitro Studies. Antibiotics (Basel) 2023; 12:antibiotics12020254. [PMID: 36830165 PMCID: PMC9952841 DOI: 10.3390/antibiotics12020254] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/22/2023] [Accepted: 01/25/2023] [Indexed: 01/28/2023] Open
Abstract
The increasing of drug-resistant bacteria and the scanty availability of novel effective antibacterial agents represent alarming problems of the modern society, which stimulated researchers to investigate novel strategies to replace or assist synthetic antibiotics. A great deal of attention has been devoted over the years to essential oils that contain mixtures of volatile compounds and have been traditionally exploited as antimicrobial remedies. Among the essential oil phytochemicals, remarkable antimicrobial and antibiotic-potentiating activities have been highlighted for cinnamaldehyde, an α,β-unsaturated aldehyde, particularly abundant in the essential oils of Cinnamomum spp., and widely used as a food additive in industrial products. In line with this evidence, in the present study, an overview of the available literature has been carried out in order to define the bacterial sensitizing profile of cinnamaldehyde. In vitro studies displayed the ability of the substance to resensitize microbial strains to drugs and increase the efficacy of different antibiotics, especially cefotaxime, ciprofloxacin, and gentamicin; however, in vivo, and clinical trials are lacking. Based on the collected findings, cinnamaldehyde appears to be of interest as an adjuvant agent to overcome superbug infections and antibiotic resistance; however, future more in-dept studies and clinical investigations should be encouraged to clarify its efficacy and the mechanisms involved.
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Pseudomonas aeruginosa H3-T6SS Combats H 2O 2 Stress by Diminishing the Amount of Intracellular Unincorporated Iron in a Dps-Dependent Manner and Inhibiting the Synthesis of PQS. Int J Mol Sci 2023; 24:ijms24021614. [PMID: 36675127 PMCID: PMC9866239 DOI: 10.3390/ijms24021614] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/28/2022] [Accepted: 01/10/2023] [Indexed: 01/17/2023] Open
Abstract
The type VI secretion system (T6SS), a protein translocation nanomachine, is widely distributed in Gram-negative bacteria and delivers effectors directly into target cells or the extracellular environment to help the bacteria gain a competitive fitness advantage and promote bacterial survival in harmful environments. In this study, we demonstrated that the synthesis of the Pseudomonas quinolone signal (PQS) in Pseudomonas aeruginosa PAO1 was inhibited by the H3-T6SS gene cluster under iron-rich conditions, and that this inhibition was relieved under iron starvation conditions. Conversely, PQS differentially regulated the expression of the H3-T6SS structural genes and the effector protein gene tseF. The expression of tseF was inhibited by PQS, while the expressions of the H3-T6SS structural genes were positively regulated by PQS. Further studies showed that the H3-T6SS was involved in the resistance of P. aeruginosa to oxidative stress caused by hydrogen peroxide (H2O2). Interestingly, H3-T6SS expression was neither induced by H2O2 stress nor regulated by OxyR (a global anti-oxidative transcriptional regulator) but was positively regulated by RpoS (a major transcription regulator of the stress response). In addition, we found that the clpV3 (a structural gene of H3-T6SS) mutation resulted in upregulation of two proteins related to PQS synthesis and many proteins related to oxidative stress resistance, while the expression of some iron storage proteins, especially Dps, were significantly downregulated. Furthermore, the clpV3 mutation led to an increase in the intracellular free Fe2+ content of P. aeruginosa. Further studies showed that both the PQS deficient mutation and overexpression of dps effectively restored the H2O2 sensitive phenotype of the H3-T6SS mutant. Finally, we proposed the following model of H3-T6SS-mediated resistance to H2O2 stress in P. aeruginosa. H3-T6SS not only reduces the intracellular free Fe2+ level by upregulating the expression of ferritin Dps, but also inhibits the synthesis of PQS to mediate the resistance of P. aeruginosa to H2O2 stress. This study highlights the important role of H3-T6SS in the ability of P. aeruginosa to combat H2O2 stress and provides a perspective for understanding the stress response mechanism of bacteria.
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Xu Y, Zhao J, Ma Y, Liu J, Cui Y, Yuan Y, Xiang C, Ma D, Liu H. The microbiome types of colorectal tissue are potentially associated with the prognosis of patients with colorectal cancer. Front Microbiol 2023; 14:1100873. [PMID: 37025624 PMCID: PMC10072283 DOI: 10.3389/fmicb.2023.1100873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 02/28/2023] [Indexed: 04/08/2023] Open
Abstract
As the second leading cause of cancer worldwide, colorectal cancer (CRC) is associated with a poor prognosis. Although recent studies have explored prognostic markers in patients with CRC, whether tissue microbes carry prognostic information remains unknown. Here, by assessing the colorectal tissue microbes of 533 CRC patients, we found that Proteobacteria (43.5%), Firmicutes (25.3%), and Actinobacteria (23.0%) dominated the colorectal tissue microbiota, which was different from the gut microbiota. Moreover, two clear clusters were obtained by clustering based on the tissue microbes across all samples. By comparison, the relative abundances of Proteobacteria and Bacteroidetes in cluster 1 were significantly higher than those in cluster 2; while compared with cluster 1, Firmicutes and Actinobacteria were more abundant in cluster 2. In addition, the Firmicutes/Bacteroidetes ratios in cluster 1 were significantly lower than those in cluster 2. Further, compared with cluster 2, patients in cluster 1 had relatively poor survival (Log-rank test, p = 0.0067). By correlating tissue microbes with patient survival, we found that the relative abundance of dominant phyla, including Proteobacteria, Firmicutes, and Bacteroidetes, was significantly associated with survival in CRC patients. Besides, the co-occurrence network of tissue microbes at the phylum level of cluster 2 was more complicated than that of cluster 1. Lastly, we detected some pathogenic bacteria enriched in cluster 1 that promote the development of CRC, thus leading to poor survival. In contrast, cluster 2 showed significant increases in the abundance of some probiotics and genera that resist cancer development. Altogether, this study provides the first evidence that the tissue microbiome of CRC patients carries prognostic information and can help design approaches for clinically evaluating the survival of CRC patients.
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Affiliation(s)
- Yixin Xu
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jing Zhao
- Department of Pathology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yu Ma
- Department of Pathology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jia Liu
- Department of Pathology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yingying Cui
- Department of Pathology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yuqing Yuan
- Department of Pathology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Chenxi Xiang
- Department of Pathology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Dongshen Ma
- Department of Pathology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- *Correspondence: Hui Liu, ; Dongshen Ma,
| | - Hui Liu
- Department of Pathology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
- Department of Pathology, Xuzhou Medical University, Xuzhou, Jiangsu, China
- *Correspondence: Hui Liu, ; Dongshen Ma,
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Maimone NM, Junior MCP, de Oliveira LFP, Rojas-Villalta D, de Lira SP, Barrientos L, Núñez-Montero K. Metabologenomics analysis of Pseudomonas sp. So3.2b, an Antarctic strain with bioactivity against Rhizoctonia solani. Front Microbiol 2023; 14:1187321. [PMID: 37213498 PMCID: PMC10192879 DOI: 10.3389/fmicb.2023.1187321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/06/2023] [Indexed: 05/23/2023] Open
Abstract
Introduction Phytopathogenic fungi are a considerable concern for agriculture, as they can threaten the productivity of several crops worldwide. Meanwhile, natural microbial products are acknowledged to play an important role in modern agriculture as they comprehend a safer alternative to synthetic pesticides. Bacterial strains from underexplored environments are a promising source of bioactive metabolites. Methods We applied the OSMAC (One Strain, Many Compounds) cultivation approach, in vitro bioassays, and metabolo-genomics analyses to investigate the biochemical potential of Pseudomonas sp. So3.2b, a strain isolated from Antarctica. Crude extracts from OSMAC were analyzed through HPLC-QTOF-MS/MS, molecular networking, and annotation. The antifungal potential of the extracts was confirmed against Rhizoctonia solani strains. Moreover, the whole-genome sequence was studied for biosynthetic gene clusters (BGCs) identification and phylogenetic comparison. Results and Discussion Molecular networking revealed that metabolite synthesis has growth media specificity, and it was reflected in bioassays results against R. solani. Bananamides, rhamnolipids, and butenolides-like molecules were annotated from the metabolome, and chemical novelty was also suggested by several unidentified compounds. Additionally, genome mining confirmed a wide variety of BGCs present in this strain, with low to no similarity with known molecules. An NRPS-encoding BGC was identified as responsible for producing the banamides-like molecules, while phylogenetic analysis demonstrated a close relationship with other rhizosphere bacteria. Therefore, by combining -omics approaches and in vitro bioassays, our study demonstrates that Pseudomonas sp. So3.2b has potential application to agriculture as a source of bioactive metabolites.
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Affiliation(s)
- Naydja Moralles Maimone
- 'Luiz de Queiroz' Superior College of Agriculture, Department of Math, Chemistry, and Statistics, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Mario Cezar Pozza Junior
- 'Luiz de Queiroz' Superior College of Agriculture, Department of Math, Chemistry, and Statistics, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Lucianne Ferreira Paes de Oliveira
- 'Luiz de Queiroz' Superior College of Agriculture, Department of Math, Chemistry, and Statistics, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Dorian Rojas-Villalta
- Biotechnology Research Center, Department of Biology, Instituto Tecnológico de Costa Rica, Cartago, Costa Rica
| | - Simone Possedente de Lira
- 'Luiz de Queiroz' Superior College of Agriculture, Department of Math, Chemistry, and Statistics, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Leticia Barrientos
- Extreme Environments Biotechnology Lab, Center of Excellence in Translational Medicine, Universidad de La Frontera, Temuco, Chile
- *Correspondence: Leticia Barrientos, ; Kattia Núñez-Montero,
| | - Kattia Núñez-Montero
- Facultad Ciencias de la Salud, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Temuco, Chile
- *Correspondence: Leticia Barrientos, ; Kattia Núñez-Montero,
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Shagaleeva OY, Kashatnikova DA, Kardonsky DA, Konanov DN, Efimov BA, Bagrov DV, Evtushenko EG, Chaplin AV, Silantiev AS, Filatova JV, Kolesnikova IV, Vanyushkina AA, Stimpson J, Zakharzhevskaya NB. Investigating volatile compounds in the Bacteroides secretome. Front Microbiol 2023; 14:1164877. [PMID: 37206326 PMCID: PMC10189065 DOI: 10.3389/fmicb.2023.1164877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 04/14/2023] [Indexed: 05/21/2023] Open
Abstract
Microorganisms and their hosts communicate with each other by secreting numerous components. This cross-kingdom cell-to-cell signaling involves proteins and small molecules, such as metabolites. These compounds can be secreted across the membrane via numerous transporters and may also be packaged in outer membrane vesicles (OMVs). Among the secreted components, volatile compounds (VOCs) are of particular interest, including butyrate and propionate, which have proven effects on intestinal, immune, and stem cells. Besides short fatty acids, other groups of volatile compounds can be either freely secreted or contained in OMVs. As vesicles might extend their activity far beyond the gastrointestinal tract, study of their cargo, including VOCs, is even more pertinent. This paper is devoted to the VOCs secretome of the Bacteroides genus. Although these bacteria are highly presented in the intestinal microbiota and are known to influence human physiology, their volatile secretome has been studied relatively poorly. The 16 most well-represented Bacteroides species were cultivated; their OMVs were isolated and characterized by NTA and TEM to determine particle morphology and their concentration. In order to analyze the VOCs secretome, we propose a headspace extraction with GC-MS analysis as a new tool for sample preparation and analysis of volatile compounds in culture media and isolated bacterial OMVs. A wide range of released VOCs, both previously characterized and newly described, have been revealed in media after cultivation. We identified more than 60 components of the volatile metabolome in bacterial media, including fatty acids, amino acids, and phenol derivatives, aldehydes and other components. We found active butyrate and indol producers among the analyzed Bacteroides species. For a number of Bacteroides species, OMVs have been isolated and characterized here for the first time as well as volatile compounds analysis in OMVs. We observed a completely different distribution of VOC in vesicles compared to the bacterial media for all analyzed Bacteroides species, including almost complete absence of fatty acids in vesicles. This article provides a comprehensive analysis of the VOCs secreted by Bacteroides species and explores new perspectives in the study of bacterial secretomes in relation the intercellular communication.
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Affiliation(s)
- Olga Yu Shagaleeva
- Laboratory of Molecular Pathophysiology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Daria A. Kashatnikova
- Laboratory of Molecular Pathophysiology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Dmitry A. Kardonsky
- Laboratory of Molecular Pathophysiology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Dmitry N. Konanov
- Laboratory of Mathematical Biology and Bioinformatics of Scientific Research Institute for Systems Biology and Medicine, Moscow, Russia
| | - Boris A. Efimov
- Laboratory of Molecular Pathophysiology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
- Department of Microbiology and Virology, Pirogov Russian National Research Medical University, Moscow, Russia
| | - Dmitry V. Bagrov
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | | | - Andrei V. Chaplin
- Department of Microbiology and Virology, Pirogov Russian National Research Medical University, Moscow, Russia
| | - Artemiy S. Silantiev
- Laboratory of Molecular Pathophysiology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Julia V. Filatova
- Laboratory of Molecular Pathophysiology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Irina V. Kolesnikova
- Laboratory of Molecular Pathophysiology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Anna A. Vanyushkina
- Vladimir Zelman Center for Neurobiology and Brain Rehabilitation, Skolkovo Institute of Science and Technology, Moscow, Russia
| | - Joanna Stimpson
- School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Natalya B. Zakharzhevskaya
- Laboratory of Molecular Pathophysiology, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
- *Correspondence: Natalya B. Zakharzhevskaya,
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Belo TCA, Santos NCDM, Souto BS, Rosa CP, Santos ADS, Oliveira KC, Corsetti PP, de Almeida LA. Ivermectin-induced bacterial gut dysbiosis does not increase susceptibility to Pseudomonas aeruginosa lung infection but exacerbates liver damage. Microbes Infect 2022; 25:105080. [PMID: 36503045 DOI: 10.1016/j.micinf.2022.105080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/22/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022]
Abstract
Excessive use of medications, including the antiparasitic drug ivermectin, can lead to bacterial gut dysbiosis, an imbalance in the intestinal microbiome, which in turn may increase or decrease susceptibility to infectious processes. To better understand the effects of continuous ivermectin usage on the gut bacterial community, C57BL/6 isogenic mice were treated by gavage with ivermectin or saline. Ivermectin-induced bacterial gut dysbiosis is characterized by a decrease in Bacteroidetes, Firmicutes, Proteobacteria and Tenericutes and an increase in species of the phylum Verrucomicrobia. A pro-inflammatory immunostimulatory caecal content, as well as disruption of caecal tissue organization and liver tissue damage, was observed in mice with gut dysbiosis. However, ivermectin-induced gut dysbiosis did not lead to acute susceptibility to Pseudomonas aeruginosa lung infection: infected mice with and without gut dysbiosis showed similar rates of recovery of viable bacteria in organs, histopathology and differential cytokine expression in the lung. Therefore, an extension of liver damage was observed in ivermectin-treated and P. aeruginosa-infected mice, which was exacerbated by infection.
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Affiliation(s)
- Thiago Caetano Andrade Belo
- Department of Microbiology and Immunology, Laboratory of Molecular Biology of Microorganisms, Federal University of Alfenas, Alfenas, Brazil
| | - Natália Cristina de Melo Santos
- Department of Microbiology and Immunology, Laboratory of Molecular Biology of Microorganisms, Federal University of Alfenas, Alfenas, Brazil
| | - Bianca Silva Souto
- Department of Microbiology and Immunology, Laboratory of Molecular Biology of Microorganisms, Federal University of Alfenas, Alfenas, Brazil
| | - Caio Pupin Rosa
- Department of Microbiology and Immunology, Laboratory of Molecular Biology of Microorganisms, Federal University of Alfenas, Alfenas, Brazil
| | - Ana de Souza Santos
- Department of Microbiology and Immunology, Laboratory of Molecular Biology of Microorganisms, Federal University of Alfenas, Alfenas, Brazil
| | - Karen Cristina Oliveira
- Department of Microbiology and Immunology, Laboratory of Molecular Biology of Microorganisms, Federal University of Alfenas, Alfenas, Brazil
| | - Patrícia Paiva Corsetti
- Department of Microbiology and Immunology, Laboratory of Molecular Biology of Microorganisms, Federal University of Alfenas, Alfenas, Brazil
| | - Leonardo Augusto de Almeida
- Department of Microbiology and Immunology, Laboratory of Molecular Biology of Microorganisms, Federal University of Alfenas, Alfenas, Brazil.
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Dixon B, Ahmed WM, Felton T, Fowler SJ. Molecular phenotyping approaches for the detection and monitoring of carbapenem-resistant Enterobacteriaceae by mass spectrometry. J Mass Spectrom Adv Clin Lab 2022; 26:9-19. [PMID: 36105942 PMCID: PMC9464899 DOI: 10.1016/j.jmsacl.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Affiliation(s)
- Breanna Dixon
- Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom
- Manchester Institute of Biotechnology, University of Manchester, United Kingdom
| | - Waqar M Ahmed
- Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom
- Manchester Institute of Biotechnology, University of Manchester, United Kingdom
| | - Tim Felton
- Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom
- NIHR Manchester Biomedical Research Centre, Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
| | - Stephen J Fowler
- Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom
- NIHR Manchester Biomedical Research Centre, Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
- Corresponding author at: Education and Research Centre, Wythenshawe Hospital, Manchester M23 9LT, United Kingdom.
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Leggett A, Li DW, Bruschweiler-Li L, Sullivan A, Stoodley P, Brüschweiler R. Differential metabolism between biofilm and suspended Pseudomonas aeruginosa cultures in bovine synovial fluid by 2D NMR-based metabolomics. Sci Rep 2022; 12:17317. [PMID: 36243882 PMCID: PMC9569359 DOI: 10.1038/s41598-022-22127-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/10/2022] [Indexed: 01/10/2023] Open
Abstract
Total joint arthroplasty is a common surgical procedure resulting in improved quality of life; however, a leading cause of surgery failure is infection. Periprosthetic joint infections often involve biofilms, making treatment challenging. The metabolic state of pathogens in the joint space and mechanism of their tolerance to antibiotics and host defenses are not well understood. Thus, there is a critical need for increased understanding of the physiological state of pathogens in the joint space for development of improved treatment strategies toward better patient outcomes. Here, we present a quantitative, untargeted NMR-based metabolomics strategy for Pseudomonas aeruginosa suspended culture and biofilm phenotypes grown in bovine synovial fluid as a model system. Significant differences in metabolic pathways were found between the suspended culture and biofilm phenotypes including creatine, glutathione, alanine, and choline metabolism and the tricarboxylic acid cycle. We also identified 21 unique metabolites with the presence of P. aeruginosa in synovial fluid and one uniquely present with the biofilm phenotype in synovial fluid. If translatable in vivo, these unique metabolite and pathway differences have the potential for further development to serve as targets for P. aeruginosa and biofilm control in synovial fluid.
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Affiliation(s)
- Abigail Leggett
- Ohio State Biochemistry Program, The Ohio State University, Columbus, OH, USA
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
| | - Da-Wei Li
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH, USA
| | - Lei Bruschweiler-Li
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH, USA
| | - Anne Sullivan
- College of Medicine, Wexner Medical Center, Columbus, OH, USA
- Department of Orthopaedics, The Ohio State University, Columbus, OH, USA
| | - Paul Stoodley
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA.
- Department of Orthopaedics, The Ohio State University, Columbus, OH, USA.
- Department of Microbiology, The Ohio State University, Columbus, OH, USA.
- National Biofilm Innovation Centre (NBIC) and National Centre for Advanced Tribology at Southampton (nCATS), Mechanical Engineering, University of Southampton, Southampton, UK.
| | - Rafael Brüschweiler
- Ohio State Biochemistry Program, The Ohio State University, Columbus, OH, USA.
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA.
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH, USA.
- Department of Biological Chemistry and Pharmacology, The Ohio State University, Columbus, OH, USA.
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Grace A, Sahu R, Owen DR, Dennis VA. Pseudomonas aeruginosa reference strains PAO1 and PA14: A genomic, phenotypic, and therapeutic review. Front Microbiol 2022; 13:1023523. [PMID: 36312971 PMCID: PMC9607943 DOI: 10.3389/fmicb.2022.1023523] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 09/28/2022] [Indexed: 11/25/2022] Open
Abstract
Pseudomonas aeruginosa is a ubiquitous, motile, gram-negative bacterium that has been recently identified as a multi-drug resistant pathogen in critical need of novel therapeutics. Of the approximately 5,000 strains, PAO1 and PA14 are common laboratory reference strains, modeling moderately and hyper-virulent phenotypes, respectively. PAO1 and PA14 have been instrumental in facilitating the discovery of novel drug targets, testing novel therapeutics, and supplying critical genomic information on the bacterium. While the two strains have contributed to a wide breadth of knowledge on the natural behaviors and therapeutic susceptibilities of P. aeruginosa, they have demonstrated significant deviations from observations in human infections. Many of these deviations are related to experimental inconsistencies in laboratory strain environment that complicate and, at times, terminate translation from laboratory results to clinical applications. This review aims to provide a comparative analysis of the two strains and potential methods to improve their clinical relevance.
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Affiliation(s)
- Amber Grace
- Department of Biological Sciences, Alabama State University, Montgomery, AL, United States
| | - Rajnish Sahu
- Department of Biological Sciences, Alabama State University, Montgomery, AL, United States
| | | | - Vida A. Dennis
- Department of Biological Sciences, Alabama State University, Montgomery, AL, United States
- *Correspondence: Vida A. Dennis,
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Hu S, Li X, Yin X, Li R, Zhang R, Zang J, Liu Y. Species-specific identification of Pseudomonas based on 16S-23S rRNA gene internal transcribed spacer (ITS) and its combined application with next-generation sequencing. BMC Microbiol 2022; 22:188. [PMID: 35915434 PMCID: PMC9341087 DOI: 10.1186/s12866-022-02607-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/26/2022] [Indexed: 11/10/2022] Open
Abstract
Background Pseudomonas species are widely distributed in the human body, animals, plants, soil, fresh water, seawater, etc. Pseudomonas aeruginosa is one of the main pathogens involved in nosocomial infections. It can cause endocarditis, empyema, meningitis, septicaemia and even death. However, the Pseudomonas classification system is currently inadequate and not well established. Results In this study, the whole genomes of 103 Pseudomonas strains belonging to 62 species available in GenBank were collected and the specificity of the 16S–23S ribosomal RNA internal transcribed spacer (ITS) sequence was analysed. Secondary structures of ITS transcripts determining where the diversity bases were located were predicted. The alignment results using BLAST indicated that the ITS sequence is specific for most species in the genus. The remaining species were identified by additional frequency analyses based on BLAST results. A double-blind experiment where 200 ITS sequences were randomly selected indicated that this method could identify Pseudomonas species with 100% sensitivity and specificity. In addition, we applied a universal primer to amplify the Pseudomonas ITS of DNA extracts from fish samples with next-generation sequencing. The ITS analysis results were utilized to species-specifically identify the proportion of Pseudomonas species in the samples. Conclusions The present study developed a species-specific method identification and classification of Pseudomonas based on ITS sequences combined NGS. The method showed its potential application in other genera. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-022-02607-w.
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Affiliation(s)
- Shuqian Hu
- The school of medicine, Nankai University, No.94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Xiang Li
- The school of medicine, Nankai University, No.94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Xin Yin
- The school of medicine, Nankai University, No.94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Runmeng Li
- The school of medicine, Nankai University, No.94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Ruiyang Zhang
- The school of medicine, Nankai University, No.94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Junhao Zang
- The school of medicine, Nankai University, No.94 Weijin Road, Nankai District, Tianjin, 300071, China
| | - Yin Liu
- The school of medicine, Nankai University, No.94 Weijin Road, Nankai District, Tianjin, 300071, China.
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Nitrite Promotes ROS Production to Potentiate Cefoperazone-Sulbactam-Mediated Elimination to Lab-Evolved and Clinical-Evolved Pseudomonas aeruginosa. Microbiol Spectr 2022; 10:e0232721. [PMID: 35863024 PMCID: PMC9430864 DOI: 10.1128/spectrum.02327-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Cefoperazone-sulbactam (SCF)-resistant Pseudomonas aeruginosa poses a big challenge in the use of SCF to treat infection caused by the pathogen. We have recently shown exogenous nitrite-enabled killing of naturally and artificially evolved Pseudomonas aeruginosa strains (AP-RCLIN-EVO and AP-RLAB-EVO, respectively) by SCF. However, the underlying mechanism is unknown. Here, reprogramming metabolomics was adopted to investigate how nitrite enhanced the SCF-mediated killing efficacy. Nitrite-reprogrammed metabolome displayed an activated pyruvate cycle (P cycle), which was confirmed by elevated activity of pyruvate dehydrogenase (PDH), α-ketoglutarate dehydrogenase, succinate dehydrogenase, and malate dehydrogenase. The activated P cycle provided NADH for the electron transport chain and thereby increased reactive oxygen species (ROS), which potentiated SCF to kill AP-RCLIN-EVO and AP-RLAB-EVO. The nitrite-enabled killing of AP-RCLIN-EVO and AP-RLAB-EVO by SCF was inhibited by PDH inhibitor furfural and ROS scavenger N-Acetyl-L-cysteine but promoted by ROS promoter Fe3+. SCF alone could not induce ROS, but SCF-mediated killing efficacy was enhanced by ROS. In addition, the present study demonstrated that nitrite repressed antioxidants, which were partly responsible for the elevated ROS. These results reveal a nitrite-reprogrammed metabolome mechanism by which AP-RCLIN-EVO and AP-RLAB-EVO sensitivity to SCF is elevated. IMPORTANCE Antibiotic-resistant Pseudomonas aeruginosa has become a real concern in hospital-acquired infections, especially in critically ill and immunocompromised patients. Understanding antibiotic resistance mechanisms and developing novel control measures are highly appreciated. We have recently shown that a reduced nitrite-dependent NO biosynthesis contributes to cefoperazone-sulbactam (SCF) resistance, which is reverted by exogenous nitrite, in both naturally and artificially evolved P. aeruginosa strains (AP-RCLIN-EVO and AP-RLAB-EVO, respectively). However, the mechanism is unknown. The present study reports that the nitrite-enabled killing of AP-RCLIN-EVO and AP-RLAB-EVO by SCF is attributed to the promoted production of reactive oxygen species (ROS). Nitrite activates the pyruvate cycle to generate NADH for the electron transport chain, which in turn promotes ROS generation. Nitrite-potentiated SCF-mediated killing is decreased by pyruvate dehydrogenase inhibitor furfural and ROS scavenger N-Acetyl-L-cysteine but increased by ROS promoter Fe3+. Furthermore, SCF-mediated killing is promoted by H2O2 in a dose-dependent manner. In addition, the combination of nitrite and H2O2 greatly enhances SCF-mediated killing. These results not only disclose a nitrite-ROS-potentiated SCF-mediated killing, but also show SCF-mediated killing is dependent upon ROS.
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Su YB, Tang XK, Zhu LP, Yang KX, Pan L, Li H, Chen ZG. Enhanced Biosynthesis of Fatty Acids Contributes to Ciprofloxacin Resistance in Pseudomonas aeruginosa. Front Microbiol 2022; 13:845173. [PMID: 35547113 PMCID: PMC9083408 DOI: 10.3389/fmicb.2022.845173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
Antibiotic-resistant Pseudomonas aeruginosa is insensitive to antibiotics and difficult to deal with. An understanding of the resistance mechanisms is required for the control of the pathogen. In this study, gas chromatography-mass spectrometer (GC-MS)-based metabolomics was performed to identify differential metabolomes in ciprofloxacin (CIP)-resistant P. aeruginosa strains that originated from P. aeruginosa ATCC 27853 and had minimum inhibitory concentrations (MICs) that were 16-, 64-, and 128-fold (PA-R16CIP, PA-R64CIP, and PA-R128CIP, respectively) higher than the original value, compared to CIP-sensitive P. aeruginosa (PA-S). Upregulation of fatty acid biosynthesis forms a characteristic feature of the CIP-resistant metabolomes and fatty acid metabolome, which was supported by elevated gene expression and enzymatic activity in the metabolic pathway. The fatty acid synthase inhibitor triclosan potentiates CIP to kill PA-R128CIP and clinically multidrug-resistant P. aeruginosa strains. The potentiated killing was companied with reduced gene expression and enzymatic activity and the returned abundance of fatty acids in the metabolic pathway. Consistently, membrane permeability was reduced in the PA-R and clinically multidrug-resistant P. aeruginosa strains, which were reverted by triclosan. Triclosan also stimulated the uptake of CIP. These findings highlight the importance of the elevated biosynthesis of fatty acids in the CIP resistance of P. aeruginosa and provide a target pathway for combating CIP-resistant P. aeruginosa.
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Affiliation(s)
- Yu-Bin Su
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China.,Department of Cell Biology, Ministry of Education Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xi-Kang Tang
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Ling-Ping Zhu
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Ke-Xin Yang
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Li Pan
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Hui Li
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Zhuang-Gui Chen
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
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Zhang S, Zhu J. Untargeted Metabolomics Sensitively Differentiates Gut Bacterial Species in Single Culture and Co-Culture Systems. ACS OMEGA 2022; 7:14643-14652. [PMID: 35557670 PMCID: PMC9088763 DOI: 10.1021/acsomega.1c07114] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/15/2022] [Indexed: 05/28/2023]
Abstract
Gut microbiome plays a vital role in human health, and its characteristic has been widely identified through next-generation sequencing techniques. Although with great genomic insights into gut microbiome, its functional information is not clearly elaborated through metagenomic techniques. On the other hand, it is suggested that fecal metabolome can be used as a functional readout of the microbiome composition; therefore, we designed a proof-of-concept study to first characterize the metabolome of different gut microbes and then investigate the relationship between bacterial metabolomes and their compositions in co-culture systems. We selected eight representative bacteria species from Bifidobacterium (2), Bacteroides (1), Lactobacillus (4), and Akkermansia (1) genera as our model microbes. Liquid chromatography coupled mass spectrometry-based untargeted metabolomics was utilized to explore the microbial metabolome of bacteria single cultures and co-culture systems. Through spectral comparisons, our results showed that untargeted metabolomics could capture the similarity and differences in metabolic profiles from eight representative gut bacteria. Also, untargeted metabolomics could sensitively differentiate gut bacterial species based on our statistical analyses. For example, citrulline and histamine levels were significantly different among four Lactobacillus species. In addition, in the co-culture systems with different bacteria population ratios, gut bacterial metabolomes can be used to quantitatively reflect bacterial population in a mixed culture. For instance, the relative abundance of 2-hydroxybutyric acid changed proportionately with the changed population ratio of Lactobacillus reuteri in the co-culture system. In summary, we proposed a workflow that could demonstrate the capability of untargeted metabolomics in differentiating gut bacterial species and detecting their characteristic metabolites proportionally to the microbial population in co-culture systems.
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Affiliation(s)
- Shiqi Zhang
- Human
Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jiangjiang Zhu
- Human
Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, Ohio 43210, United States
- James
Comprehensive Cancer Center, The Ohio State
University, Columbus, Ohio 43210, United States
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Deng Q, Wang Z, Wang J, Zhang J, Zhang Y, Liang H. 16S rRNA gene sequencing reveals altered composition of gut microbiota in postoperative individuals with renal stones. Lett Appl Microbiol 2022; 75:271-280. [PMID: 35306682 PMCID: PMC9544399 DOI: 10.1111/lam.13701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 11/28/2022]
Abstract
Renal stones are a common urological disease with high prevalence and recurrence rates. Characterizing gut microbiome profiles of first‐onset renal calculi patients, both before and after surgery, may provide valuable insights and identify potential biomarkers for the disease. In this study, we explored the associations between the gut microbiome and renal stone formation using 16S ribosomal RNA (rRNA) gene sequencing. In brief, 20 patients were recruited, and information on health and eating habits within the previous 1–3 months was collected upon admission. A total of 493 operational taxonomic units (OTUs) were detected in 40 specimens, with an average of 67,888 ± 827 reads per sample. The results of OTU‐based partial least squares discriminant analysis (PLS‐DA) analysis showed differences between RS1 (fecal specimen before surgery) and RS2 (one month later after surgery) groups, with a significantly higher level of OTU7 in the RS2 group. Taxonomy‑based comparisons of the gut microbiome showed differences in the flora composition, with the prevalence of Enterobacteriales, Enterobacteriaceae, Gammaproteobacteria and Escherichia being higher in the RS2 group and the prevalence of Pseudomonadaceae, Pseudomonadales and Pseudomonas being higher in the RS1 group. Correlation analysis showed that an increased prevalence of Enterobacteriaceae, Gammaproteobacteria and Escherichia associated with a decreased level of urea, and a decreased creatinine level was correlated with an increased prevalence of Escherichia. These data strongly suggest that the gut microbiome plays an important role in kidney stone formation, and these findings may provide new insights for the prevention, diagnosis, and treatment of renal stones.
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Affiliation(s)
- Qiong Deng
- Department of Urology Affiliated Longhua People’s Hospital Southern Medical University 518109 Guangdong
- School of Basic Medical Sciences Southern Medical University 510515 Guangdong
| | - Zhu Wang
- Department of Urology Affiliated Longhua People’s Hospital Southern Medical University 518109 Guangdong
| | - Jieyan Wang
- Department of Urology Affiliated Longhua People’s Hospital Southern Medical University 518109 Guangdong
| | - Jianwen Zhang
- Department of Urology Affiliated Longhua People’s Hospital Southern Medical University 518109 Guangdong
| | - Ying Zhang
- Department of Urology Affiliated Longhua People’s Hospital Southern Medical University 518109 Guangdong
| | - Hui Liang
- Department of Urology Affiliated Longhua People’s Hospital Southern Medical University 518109 Guangdong
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Tang XK, Su YB, Ye HQ, Dai ZY, Yi H, Yang KX, Zhang TT, Chen ZG. Glucose-Potentiated Amikacin Killing of Cefoperazone/Sulbactam Resistant Pseudomonas aeruginosa. Front Microbiol 2022; 12:800442. [PMID: 35310395 PMCID: PMC8928219 DOI: 10.3389/fmicb.2021.800442] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 12/14/2021] [Indexed: 11/13/2022] Open
Abstract
Multidrug-resistant Pseudomonas aeruginosa has become one of global threat pathogens for human health due to insensitivity to antibiotics. Recently developed reprogramming metabolomics can identify biomarkers, and then, the biomarkers were used to revert the insensitivity and elevate antibiotic-mediated killing. Here, the methodology was used to study cefoperazone/sulbactam (SCF)-resistant P. aeruginosa (PA-RSCF) and identified reduced glycolysis and pyruvate cycle, a recent clarified cycle providing respiratory energy in bacteria, as the most key enriched pathways and the depressed glucose as one of the most crucial biomarkers. Further experiments showed that the depression of glucose was attributed to reduction of glucose transport. However, exogenous glucose reverted the reduction to elevate intracellular glucose via activating glucose transport. The elevated glucose fluxed to the glycolysis, pyruvate cycle, and electron transport chain to promote downstream proton motive force (PMF). Consistently, exogenous glucose did not promote SCF-mediated elimination but potentiated aminoglycosides-mediated killing since aminoglycosides uptake is PMF-dependent, where amikacin was the best one. The glucose-potentiated amikacin-mediated killing was effective to both lab-evolved PA-RSCF and clinical multidrug-resistant P. aeruginosa. These results reveal the depressed glucose uptake causes the reduced intracellular glucose and expand the application of metabolome-reprogramming on selecting conventional antibiotics to achieve the best killing efficacy.
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Affiliation(s)
- Xi-kang Tang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yu-bin Su
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Hui-qing Ye
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhen-yuan Dai
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huan Yi
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ke-xin Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tian-tuo Zhang
- Department of Pulmonary & Critical Care Medicine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhuang-gui Chen
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Zhuang-gui Chen,
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Zhao Y, Wee CY, Zhang H, Yang Z, Wang WEJ, Thian ES. Silver-substituted hydroxyapatite inhibits Pseudomonas aeruginosa outer membrane protein F: A potential antibacterial mechanism. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 134:112713. [DOI: 10.1016/j.msec.2022.112713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/06/2022] [Accepted: 02/09/2022] [Indexed: 12/20/2022]
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Sannathimmappa M, Nambiar V, Aravindakshan R. A 5-year retrospective study of antibiotic resistance pattern of Pseudomonas aeruginosa isolated from various clinical samples at a tertiary care hospital. MEDICAL JOURNAL OF DR. D.Y. PATIL VIDYAPEETH 2022. [DOI: 10.4103/mjdrdypu.mjdrdypu_312_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Inactivation of Nitrite-Dependent Nitric Oxide Biosynthesis Is Responsible for Overlapped Antibiotic Resistance between Naturally and Artificially Evolved Pseudomonas aeruginosa. mSystems 2021; 6:e0073221. [PMID: 34546070 PMCID: PMC8547483 DOI: 10.1128/msystems.00732-21] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Metabolic flexibility of Pseudomonas aeruginosa could lead to new strategies to combat bacterial infection. The present study used gas chromatography-mass spectrometry (GC-MS)-based metabolomics to investigate global metabolism in naturally and artificially evolved strains with cefoperazone-sulbactam (SCF) resistance (AP-RCLIN-EVO and AP-RLAB-EVO, respectively) from the same parent strain (AP-RCLIN). Inactivation of the pyruvate cycle and nitric oxide (NO) biosynthesis was identified as characteristic features of SCF resistance in both evolved strains. Nitrite-dependent NO biosynthesis instead of an arginine-dependent NO pathway is responsible for the reduced NO, which is attributed to lower nitrite and electrons from the oxidation of NADH to NAD+ provided by the pyruvate cycle. Exogenous fumarate, NADH, nitrate, and nitrite promoted the NO level and thereby potentiated SCF-mediated killing. Unexpectedly, fumarate caused the elevation of nitrite, while nitrite/nitrate resulted in the increase of Cyt bc1 complex (providing electrons). These interesting findings indicate that the nitrite-dependent NO biosynthesis and the pyruvate cycle are mutual to promote NO metabolism. In addition, the NO-potentiated sensitivity to SCF was validated by NO donor sodium nitroprusside. These results reveal an endogenous NO-mediated SCF resistance and develop its reversion by metabolites in P. aeruginosa. IMPORTANCE Infections with Pseudomonas aeruginosa have become a real concern among hospital-acquired infections, especially in cystic fibrosis patients and immunocompromised individuals. Control of the pathogen is challenging due to antibiotic resistance. Since bacterial metabolic state impacts sensitivity and resistance to antibiotics, exploring and disclosing bacterial metabolic mechanisms can be used to develop a metabolome-reprogramming approach to elevate bacterial sensitivity to antibiotics. Therefore, GC-MS-based metabolomics is used to explore the similarities and differences of metabolomes between naturally and artificially evolved cefoperazone-sulbactam (SCF)-resistant P. aeruginosa (AP-RCLIN-EVO and AP-RLAB-EVO, respectively) from the same parent strain (AP-RCLIN). It identifies the depressed nitrite-dependent nitric oxide (NO) biosynthesis as the most overlapping characteristic feature between AP-RCLIN-EVO and AP-RLAB-EVO. This is because the pyruvate cycle fluctuates, thereby generating fewer NADH and providing fewer electrons for nitrite-dependent NO biosynthesis than the control. Interestingly, exogenous fumarate, NADH, nitrate, and nitrite as well as NO donor sodium nitroprusside promote NO generation to elevate sensitivity to SCF. These results highlight the way to understand metabolic mechanisms of antibiotic resistance and explore metabolic modulation to combat the bacterial pathogen.
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Comparison of bacteria disintegration methods and their influence on data analysis in metabolomics. Sci Rep 2021; 11:20859. [PMID: 34675363 PMCID: PMC8531443 DOI: 10.1038/s41598-021-99873-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022] Open
Abstract
Metabolomic experiments usually contain many different steps, each of which can strongly influence the obtained results. In this work, metabolic analyses of six bacterial strains were performed in light of three different bacterial cell disintegration methods. Three strains were gram-negative (Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumoniae), and three were gram-positive (Corynebacterium glutamicum, Bacillus cereus, and Enterococcus faecalis). For extraction, the methanol–water extraction method (1:1) was chosen. To compare the efficiency of different cell disintegration methods, sonication, sand mill, and tissue lyser were used. For bacterial extract metabolite analysis, 1H NMR together with univariate and multivariate analyses were applied. The obtained results showed that metabolite concentrations are strongly dependent on the cell lysing methodology used and are different for various bacterial strains. The results clearly show that one of the disruption methods gives the highest concentration for most identified compounds (e. g. sand mill for E. faecalis and tissue lyser for B. cereus). This study indicated that the comparison of samples prepared by different procedures can lead to false or imprecise results, leaving an imprint of the disintegration method. Furthermore, the presented results showed that NMR might be a useful bacterial strain identification and differentiation method. In addition to disintegration method comparison, the metabolic profiles of each elaborated strain were analyzed, and each exhibited its metabolic profile. Some metabolites were identified by the 1H NMR method in only one strain. The results of multivariate data analyses (PCA) show that regardless of the disintegration method used, the strain group can be identified. Presented results can be significant for all types of microbial studies containing the metabolomic targeted and non-targeted analysis.
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Wu Z, Deng X, Hu Q, Xiao X, Jiang J, Ma X, Wu M. Houttuynia cordata Thunb: An Ethnopharmacological Review. Front Pharmacol 2021; 12:714694. [PMID: 34539401 PMCID: PMC8440972 DOI: 10.3389/fphar.2021.714694] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/05/2021] [Indexed: 12/26/2022] Open
Abstract
Houttuynia cordata Thunb (H. cordata; Saururaceae) is widely distributed in Asian regions. It plays an important role in traditional health care and disease treatment, as its aboveground stems and leaves have a long medicinal history in China and are used in the treatment of pneumonia and lung abscess. In clinical treatment, it can usually be combined with other drugs to treat dysentery, cold, fever, and mumps; additionally, H. cordata is an edible plant. This review summarizes detailed information on the phytochemistry and pharmacological effects of H. cordata. By searching the keywords “H. cordata and lung”, “H. cordata and heart”, “H. cordata and liver”, and “H. cordata and inflammation” in PubMed, Web of Science and ScienceDirect, we screened out articles with high correlation in the past ten years, sorted out the research contents, disease models and research methods of the articles, and provided a new perspective on the therapeutic effects of H. cordata. A variety of its chemical constituents are characteristic of medicinal plants, the chemical constituents were isolated from H. cordata, including volatile oils, alkaloids, flavonoids, and phenolic acids. Flavonoids and volatile oils are the main active components. In pharmacological studies, H. cordata showed organ protective activity, such as reducing the release of inflammatory factors to alleviate lung injury. Moreover, H. cordata regulates immunity, enhances the immune barriers of the vagina, oral cavity, and intestinal tract, and combined with the antibacterial and antiviral activity of its extract, effectively reduces pathogen infection. Furthermore, experiments in vivo and in vitro showed significant anti-inflammatory activity, and its chemical derivatives exert potential therapeutic activity against rheumatoid arthritis. Antitumour action is also an important pharmacological activity of H. cordata, and studies have shown that H. cordata has a notable effect on lung tumour, liver tumour, colon tumour, and breast tumour. This review categorizes the biological activities of H. cordata according to modern research papers, and provides insights into disease prevention and treatment of H. cordata.
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Affiliation(s)
- Zhao Wu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacy, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xinyu Deng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacy, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qichao Hu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacy, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaolin Xiao
- Hospital of Chengdu University of Traditional Chinese Medicine, School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jing Jiang
- School of Physical Education, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiao Ma
- State Key Laboratory of Southwestern Chinese Medicine Resources, Department of Pharmacy, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Mingquan Wu
- Department of Pharmacy, Sichuan Orthopedic Hospital, Chengdu, China
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